Removed Linux-specific define (didn't work; the function wasn't defined when...

Removed Linux-specific define (didn't work; the function wasn't defined when compiling on Linux, for some reason)

src/desktop/UBDesktopPalette.h

@@ -55,9 +55,9 @@ class UBDesktopPalette : public UBActionPalette
         void windowClick();
         void screenClick();
 
-#ifdef Q_OS_LINUX
+//#ifdef Q_OS_LINUX //TODO: check why this produces an error on linux if uncommented
         void refreshMask();
-#endif
+//#endif
 
     public slots: