Revert "UI: Add ability for stingers to use filters"

This reverts commit 36ab7b97cff3bad9f3056b2f3cb1fa6a7158f79b.

The fact that a transition is a composition of two scenes was not
factored into the merging of this PR. Thus, it would apply to the
underlying scenes when transitioning, making the effectiveness of this
feature cause inconsistent rendering of the underlying scenes when
transitions are activated versus when they're not.

UI/window-basic-main-transitions.cpp

@@ -657,7 +657,6 @@ void OBSBasic::on_transitionProps_clicked()
 		return;
 
 	auto properties = [&]() { CreatePropertiesWindow(source); };
-	auto filters = [&]() { CreateFiltersWindow(source); };
 
 	QMenu menu(this);
 
@@ -675,13 +674,6 @@ void OBSBasic::on_transitionProps_clicked()
 	connect(action, &QAction::triggered, properties);
 	menu.addAction(action);
 
-	if (strcmp(obs_source_get_unversioned_id(source),
-		   "obs_stinger_transition") == 0) {
-		action = new QAction(QTStr("Filters"), &menu);
-		connect(action, &QAction::triggered, filters);
-		menu.addAction(action);
-	}
-
 	menu.exec(QCursor::pos());
 }