copilot: Remove PromptTokensDetails from Usage struct (cherry-pick #33029) (#33108)

gcp-cherry-pick-bot[bot] and Umesh Yadav created 6 months ago

Cherry-picked copilot: Remove PromptTokensDetails from Usage struct
(#33029)

Closes #33024

Release Notes:

- Removed `PromptTokensDetails` from `Usage` as Gemini no longer
supplies cached token data for copilot.

Co-authored-by: Umesh Yadav <[e-mail]>

Change summary

crates/copilot/src/copilot_chat.rs | 6 ------
1 file changed, 6 deletions(-)

Detailed changes

crates/copilot/src/copilot_chat.rs

@@ -318,15 +318,9 @@ pub struct ResponseEvent {
 pub struct Usage {
     pub completion_tokens: u64,
     pub prompt_tokens: u64,
-    pub prompt_tokens_details: PromptTokensDetails,
     pub total_tokens: u64,
 }
 
-#[derive(Deserialize, Debug)]
-pub struct PromptTokensDetails {
-    pub cached_tokens: u64,
-}
-
 #[derive(Debug, Deserialize)]
 pub struct ResponseChoice {
     pub index: usize,