Revert "project: Allow running multiple instances of a single language server within a single worktree" (#23472)

Reverts zed-industries/zed#22182
I've merged the build too soon as I wanted it to be excluded from todays
Preview.

crates/copilot/src/copilot.rs

@@ -461,14 +461,12 @@ impl Copilot {
                 .on_notification::<StatusNotification, _>(|_, _| { /* Silence the notification */ })
                 .detach();
 
+            let initialize_params = None;
             let configuration = lsp::DidChangeConfigurationParams {
                 settings: Default::default(),
             };
             let server = cx
-                .update(|cx| {
-                    let params = server.default_initialize_params(cx);
-                    server.initialize(params, configuration.into(), cx)
-                })?
+                .update(|cx| server.initialize(initialize_params, configuration.into(), cx))?
                 .await?;
 
             let status = server