UI: Don't define QT_NO_GLIB

The same reasoning of the previous patch means we can also stop
force-disabling Qt/GLib integration.

UI/obs-app.cpp

@@ -1940,10 +1940,6 @@ static int run_program(fstream &logFile, int argc, char *argv[])
 		Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
 #endif
 
-#if !defined(_WIN32) && !defined(__APPLE__) && BROWSER_AVAILABLE
-	setenv("QT_NO_GLIB", "1", true);
-#endif
-
 	QCoreApplication::addLibraryPath(".");
 
 #if __APPLE__