diff --git a/crates/collab/src/db/tables.rs b/crates/collab/src/db/tables.rs
index 32c4570af5893b503f0fcfdaa1759616cf9be387..e619acaaf2bc237caac67dedcb5c738114d260d5 100644
--- a/crates/collab/src/db/tables.rs
+++ b/crates/collab/src/db/tables.rs
@@ -6,8 +6,6 @@ pub mod channel;
 pub mod channel_buffer_collaborator;
 pub mod channel_chat_participant;
 pub mod channel_member;
-pub mod channel_message;
-pub mod channel_message_mention;
 pub mod contact;
 pub mod contributor;
 pub mod embedding;
@@ -18,7 +16,6 @@ pub mod language_server;
 pub mod notification;
 pub mod notification_kind;
 pub mod observed_buffer_edits;
-pub mod observed_channel_messages;
 pub mod project;
 pub mod project_collaborator;
 pub mod project_repository;
diff --git a/crates/collab/src/db/tables/channel_message.rs b/crates/collab/src/db/tables/channel_message.rs
deleted file mode 100644
index 2ec776f189c938d4c65a45a75ebe6a24482a314e..0000000000000000000000000000000000000000
--- a/crates/collab/src/db/tables/channel_message.rs
+++ /dev/null
@@ -1,47 +0,0 @@
-use crate::db::{ChannelId, MessageId, UserId};
-use sea_orm::entity::prelude::*;
-use time::PrimitiveDateTime;
-
-#[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
-#[sea_orm(table_name = "channel_messages")]
-pub struct Model {
-    #[sea_orm(primary_key)]
-    pub id: MessageId,
-    pub channel_id: ChannelId,
-    pub sender_id: UserId,
-    pub body: String,
-    pub sent_at: PrimitiveDateTime,
-    pub edited_at: Option<PrimitiveDateTime>,
-    pub nonce: Uuid,
-    pub reply_to_message_id: Option<MessageId>,
-}
-
-impl ActiveModelBehavior for ActiveModel {}
-
-#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
-pub enum Relation {
-    #[sea_orm(
-        belongs_to = "super::channel::Entity",
-        from = "Column::ChannelId",
-        to = "super::channel::Column::Id"
-    )]
-    Channel,
-    #[sea_orm(
-        belongs_to = "super::user::Entity",
-        from = "Column::SenderId",
-        to = "super::user::Column::Id"
-    )]
-    Sender,
-}
-
-impl Related<super::channel::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::Channel.def()
-    }
-}
-
-impl Related<super::user::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::Sender.def()
-    }
-}
diff --git a/crates/collab/src/db/tables/channel_message_mention.rs b/crates/collab/src/db/tables/channel_message_mention.rs
deleted file mode 100644
index 6155b057f0cf8862cb26f6efff30669d59592eb8..0000000000000000000000000000000000000000
--- a/crates/collab/src/db/tables/channel_message_mention.rs
+++ /dev/null
@@ -1,43 +0,0 @@
-use crate::db::{MessageId, UserId};
-use sea_orm::entity::prelude::*;
-
-#[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
-#[sea_orm(table_name = "channel_message_mentions")]
-pub struct Model {
-    #[sea_orm(primary_key)]
-    pub message_id: MessageId,
-    #[sea_orm(primary_key)]
-    pub start_offset: i32,
-    pub end_offset: i32,
-    pub user_id: UserId,
-}
-
-impl ActiveModelBehavior for ActiveModel {}
-
-#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
-pub enum Relation {
-    #[sea_orm(
-        belongs_to = "super::channel_message::Entity",
-        from = "Column::MessageId",
-        to = "super::channel_message::Column::Id"
-    )]
-    Message,
-    #[sea_orm(
-        belongs_to = "super::user::Entity",
-        from = "Column::UserId",
-        to = "super::user::Column::Id"
-    )]
-    MentionedUser,
-}
-
-impl Related<super::channel::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::Message.def()
-    }
-}
-
-impl Related<super::user::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::MentionedUser.def()
-    }
-}
diff --git a/crates/collab/src/db/tables/observed_channel_messages.rs b/crates/collab/src/db/tables/observed_channel_messages.rs
deleted file mode 100644
index 18259f844274750ebcb463c7d69d619457055d89..0000000000000000000000000000000000000000
--- a/crates/collab/src/db/tables/observed_channel_messages.rs
+++ /dev/null
@@ -1,41 +0,0 @@
-use crate::db::{ChannelId, MessageId, UserId};
-use sea_orm::entity::prelude::*;
-
-#[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
-#[sea_orm(table_name = "observed_channel_messages")]
-pub struct Model {
-    #[sea_orm(primary_key)]
-    pub user_id: UserId,
-    pub channel_id: ChannelId,
-    pub channel_message_id: MessageId,
-}
-
-#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
-pub enum Relation {
-    #[sea_orm(
-        belongs_to = "super::channel::Entity",
-        from = "Column::ChannelId",
-        to = "super::channel::Column::Id"
-    )]
-    Channel,
-    #[sea_orm(
-        belongs_to = "super::user::Entity",
-        from = "Column::UserId",
-        to = "super::user::Column::Id"
-    )]
-    User,
-}
-
-impl Related<super::channel::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::Channel.def()
-    }
-}
-
-impl Related<super::user::Entity> for Entity {
-    fn to() -> RelationDef {
-        Relation::User.def()
-    }
-}
-
-impl ActiveModelBehavior for ActiveModel {}