Revert "Introduce a new ToggleGraphicsProfiler command (#7607)" (#8567)

This reverts commit 0cebf68306.

Although this thing is very cool, it is a top source of crashes.

Example crash:
```
Segmentation fault: 11 on thread 26
  objc_retain +16
  invocation function for block in Overlay::onCommandBufferCommit(id<MTLCommandBuffer>) +60
  MTLDispatchListApply +52
```

Release Notes:

- Removed "Toggle Graphics Profiler" as it crashes too much.

crates/gpui/src/platform/test/window.rs

@@ -251,8 +251,6 @@ impl PlatformWindow for TestWindow {
         self.0.lock().sprite_atlas.clone()
     }
 
-    fn set_graphics_profiler_enabled(&self, _enabled: bool) {}
-
     fn as_test(&mut self) -> Option<&mut TestWindow> {
         Some(self)
     }