src/vs/workbench/api/common/extHostComments.ts/ExtHostComments/$deleteCommentThread
class ExtHostComments:	$deleteCommentThread(commentControllerHandle: number, commentThreadHandle: number) {
		const commentController = this._commentControllers.get(commentControllerHandle);

		if (commentController) {
			commentController.$deleteCommentThread(commentThreadHandle);
		}
	}