Move AppKit (macOS) backend to winit-appkit (#4248)

src/platform_impl/apple/appkit/util.rs

@@ -1,39 +0,0 @@
-use objc2_core_graphics::CGError;
-use tracing::trace;
-use winit_core::error::OsError;
-
-macro_rules! trace_scope {
-    ($s:literal) => {
-        let _crate =
-            $crate::platform_impl::platform::appkit::util::TraceGuard::new(module_path!(), $s);
-    };
-}
-
-pub(crate) struct TraceGuard {
-    module_path: &'static str,
-    called_from_fn: &'static str,
-}
-
-impl TraceGuard {
-    #[inline]
-    pub(crate) fn new(module_path: &'static str, called_from_fn: &'static str) -> Self {
-        trace!(target = module_path, "Triggered `{}`", called_from_fn);
-        Self { module_path, called_from_fn }
-    }
-}
-
-impl Drop for TraceGuard {
-    #[inline]
-    fn drop(&mut self) {
-        trace!(target = self.module_path, "Completed `{}`", self.called_from_fn);
-    }
-}
-
-#[track_caller]
-pub(crate) fn cgerr(err: CGError) -> Result<(), OsError> {
-    if err == CGError::Success {
-        Ok(())
-    } else {
-        Err(os_error!(format!("CGError {err:?}")))
-    }
-}