Revert "Remote LSP logs (#36709)" (#37051)

This reverts commit e2bf8e5d9c.

See
https://github.com/zed-industries/zed/pull/37050#issuecomment-3230017137
for the context: musl builds started to fail and the amount of `cfg!`s
to fix this is too large.

Instead, the lsp_log.rs has to be split and repurposed better for the
remote headless server.

Release Notes:

- N/A

crates/assistant_slash_command/Cargo.toml

@@ -25,7 +25,7 @@ parking_lot.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 ui.workspace = true
-workspace = { path = "../workspace", default-features = false }
+workspace.workspace = true
 workspace-hack.workspace = true
 
 [dev-dependencies]