UI: Remove unused variable

Closes obsproject/obs-studio#2843

UI/properties-view.cpp

@@ -114,8 +114,6 @@ void OBSPropertiesView::RefreshProperties()
 	widget->setLayout(layout);
 
 	QSizePolicy mainPolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
-	QSizePolicy policy(QSizePolicy::Preferred, QSizePolicy::Preferred);
-	//widget->setSizePolicy(policy);
 
 	layout->setLabelAlignment(Qt::AlignRight);