Visualscript: Hide empty categories for basic types and methods.

modules/visual_script/visual_script_property_selector.cpp

@@ -222,6 +222,10 @@ void VisualScriptPropertySelector::_update_search() {
 				item->set_selectable(0, true);
 			}
 		}
+
+		if (category && category->get_children() == NULL) {
+			memdelete(category); //old category was unused
+		}
 	}
 
 	if (seq_connect == true && visual_script_generic == false) {
@@ -348,6 +352,10 @@ void VisualScriptPropertySelector::_update_search() {
 		found = true;
 	}
 
+	if (category && category->get_children() == NULL) {
+		memdelete(category); //old category was unused
+	}
+
 	get_ok()->set_disabled(root->get_children() == NULL);
 }