src/vs/workbench/api/browser/mainThreadDecorations.ts/MainThreadDecorations/$unregisterDecorationProvider
class MainThreadDecorations:	$unregisterDecorationProvider(handle: number): void {
		const provider = this._provider.get(handle);
		if (provider) {
			dispose(provider);
			this._provider.delete(handle);
		}
	}