UI: Actually fix non-windows compilation

This is a little bit embarrassing.  We'll just pretend we didn't see
that.

UI/window-basic-main-browser.cpp

@@ -160,7 +160,5 @@ void OBSBasic::InitBrowserPanelSafeBlock()
 			QTStr("BrowserPanelInit.Title"),
 			QTStr("BrowserPanelInit.Text"));
 	InitPanelCookieManager();
-#else
-	UNUSED_PARAMETER();
 #endif
 }