Removed old experiments settings and staff mode flag, added new StaffMode global that is set based on the webserver's staff bit

crates/workspace/src/workspace.rs

@@ -349,9 +349,6 @@ pub struct AppState {
 impl AppState {
     #[cfg(any(test, feature = "test-support"))]
     pub fn test(cx: &mut MutableAppContext) -> Arc<Self> {
-        use fs::HomeDir;
-
-        cx.set_global(HomeDir(Path::new("/tmp/").to_path_buf()));
         let settings = Settings::test(cx);
         cx.set_global(settings);