diff --git a/crates/extension_host/src/copilot_migration.rs b/crates/extension_host/src/copilot_migration.rs
deleted file mode 100644
index dd5ede4687fb16723960920f5d14e26e49e09954..0000000000000000000000000000000000000000
--- a/crates/extension_host/src/copilot_migration.rs
+++ /dev/null
@@ -1,216 +0,0 @@
-use credentials_provider::CredentialsProvider;
-use gpui::App;
-use std::path::PathBuf;
-
-const COPILOT_CHAT_EXTENSION_ID: &str = "copilot-chat";
-const COPILOT_CHAT_PROVIDER_ID: &str = "copilot-chat";
-
-/// Migrates Copilot OAuth credentials from the GitHub Copilot config files
-/// to the new extension-based credential location.
-///
-/// This should only be called during auto-install of the extension.
-pub fn migrate_copilot_credentials_if_needed(extension_id: &str, cx: &mut App) {
-    if extension_id != COPILOT_CHAT_EXTENSION_ID {
-        return;
-    }
-
-    let credential_key = format!(
-        "extension-llm-{}:{}",
-        COPILOT_CHAT_EXTENSION_ID, COPILOT_CHAT_PROVIDER_ID
-    );
-
-    let credentials_provider = <dyn CredentialsProvider>::global(cx);
-
-    cx.spawn(async move |_cx| {
-        // Read from copilot config files
-        let oauth_token = match read_copilot_oauth_token().await {
-            Some(token) if !token.is_empty() => token,
-            _ => {
-                log::debug!("No existing Copilot OAuth token found to migrate");
-                return;
-            }
-        };
-
-        log::info!("Migrating existing Copilot OAuth token to Copilot Chat extension");
-
-        match credentials_provider
-            .write_credentials(&credential_key, "api_key", oauth_token.as_bytes(), &_cx)
-            .await
-        {
-            Ok(()) => {
-                log::info!("Successfully migrated Copilot OAuth token to Copilot Chat extension");
-            }
-            Err(err) => {
-                log::error!("Failed to migrate Copilot OAuth token: {}", err);
-            }
-        }
-    })
-    .detach();
-}
-
-async fn read_copilot_oauth_token() -> Option<String> {
-    let config_paths = copilot_config_paths();
-
-    for path in config_paths {
-        if let Some(token) = read_oauth_token_from_file(&path).await {
-            return Some(token);
-        }
-    }
-
-    None
-}
-
-fn copilot_config_paths() -> Vec<PathBuf> {
-    let config_dir = if cfg!(target_os = "windows") {
-        dirs::data_local_dir()
-    } else {
-        std::env::var("XDG_CONFIG_HOME")
-            .map(PathBuf::from)
-            .ok()
-            .or_else(|| dirs::home_dir().map(|h| h.join(".config")))
-    };
-
-    let Some(config_dir) = config_dir else {
-        return Vec::new();
-    };
-
-    let copilot_dir = config_dir.join("github-copilot");
-
-    vec![
-        copilot_dir.join("hosts.json"),
-        copilot_dir.join("apps.json"),
-    ]
-}
-
-async fn read_oauth_token_from_file(path: &PathBuf) -> Option<String> {
-    let contents = match smol::fs::read_to_string(path).await {
-        Ok(contents) => contents,
-        Err(_) => return None,
-    };
-
-    extract_oauth_token(&contents, "github.com")
-}
-
-fn extract_oauth_token(contents: &str, domain: &str) -> Option<String> {
-    let value: serde_json::Value = serde_json::from_str(contents).ok()?;
-    let obj = value.as_object()?;
-
-    for (key, value) in obj.iter() {
-        if key.starts_with(domain) {
-            if let Some(token) = value.get("oauth_token").and_then(|v| v.as_str()) {
-                return Some(token.to_string());
-            }
-        }
-    }
-
-    None
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use gpui::TestAppContext;
-
-    #[test]
-    fn test_extract_oauth_token_from_hosts_json() {
-        let contents = r#"{
-            "github.com": {
-                "oauth_token": "ghu_test_token_12345"
-            }
-        }"#;
-
-        let token = extract_oauth_token(contents, "github.com");
-        assert_eq!(token, Some("ghu_test_token_12345".to_string()));
-    }
-
-    #[test]
-    fn test_extract_oauth_token_with_user_suffix() {
-        let contents = r#"{
-            "github.com:user": {
-                "oauth_token": "ghu_another_token"
-            }
-        }"#;
-
-        let token = extract_oauth_token(contents, "github.com");
-        assert_eq!(token, Some("ghu_another_token".to_string()));
-    }
-
-    #[test]
-    fn test_extract_oauth_token_wrong_domain() {
-        let contents = r#"{
-            "gitlab.com": {
-                "oauth_token": "some_token"
-            }
-        }"#;
-
-        let token = extract_oauth_token(contents, "github.com");
-        assert_eq!(token, None);
-    }
-
-    #[test]
-    fn test_extract_oauth_token_invalid_json() {
-        let contents = "not valid json";
-        let token = extract_oauth_token(contents, "github.com");
-        assert_eq!(token, None);
-    }
-
-    #[test]
-    fn test_extract_oauth_token_missing_oauth_token_field() {
-        let contents = r#"{
-            "github.com": {
-                "user": "testuser"
-            }
-        }"#;
-
-        let token = extract_oauth_token(contents, "github.com");
-        assert_eq!(token, None);
-    }
-
-    #[test]
-    fn test_extract_oauth_token_multiple_entries_picks_first_match() {
-        let contents = r#"{
-            "gitlab.com": {
-                "oauth_token": "gitlab_token"
-            },
-            "github.com": {
-                "oauth_token": "github_token"
-            }
-        }"#;
-
-        let token = extract_oauth_token(contents, "github.com");
-        assert_eq!(token, Some("github_token".to_string()));
-    }
-
-    #[gpui::test]
-    async fn test_skips_migration_for_other_extensions(cx: &mut TestAppContext) {
-        cx.update(|cx| {
-            migrate_copilot_credentials_if_needed("some-other-extension", cx);
-        });
-
-        cx.run_until_parked();
-
-        let credentials = cx.read_credentials("extension-llm-copilot-chat:copilot-chat");
-        assert!(
-            credentials.is_none(),
-            "Should not create credentials for other extensions"
-        );
-    }
-
-    // Note: Unlike the other migrations, copilot migration reads from the filesystem
-    // (copilot config files), not from the credentials provider. In tests, these files
-    // don't exist, so no migration occurs.
-    #[gpui::test]
-    async fn test_no_credentials_when_no_copilot_config_exists(cx: &mut TestAppContext) {
-        cx.update(|cx| {
-            migrate_copilot_credentials_if_needed(COPILOT_CHAT_EXTENSION_ID, cx);
-        });
-
-        cx.run_until_parked();
-
-        let credentials = cx.read_credentials("extension-llm-copilot-chat:copilot-chat");
-        assert!(
-            credentials.is_none(),
-            "No credentials should be written when copilot config doesn't exist"
-        );
-    }
-}