Update desktop-utils.pro

Remove old utilities from the desktop-utils.pro file.
lumina-calculator and lumina-pdf are in their own repositories now(lumina-desktop/lumina-calculator, lumina-desktop/lumina-pdf)

Author: beanpole135

src-qt5/desktop-utils/desktop-utils.pro

@@ -8,9 +8,6 @@ SUBDIRS+= lumina-fm \
 	lumina-screenshot \
 	lumina-fileinfo \
 	lumina-textedit \
-	lumina-calculator \
 	lumina-archiver \
-#	lumina-notify \
 	lumina-mediaplayer \
-	lumina-pdf \
 	lumina-photo