remove deprecated code

--we dont need to remove our old desktop files any more.
Our users that use Latte through master branch installation
should have already updated their desktop file properly.

install.sh

@@ -28,14 +28,3 @@ else
 fi
 
 sudo make install
-
-oldDeskFile="/usr/share/applications/latte-dock.desktop"
-
-# TODO: remove this lines before 0.7 release, it is provided only for
-# the users that use the master branch and built it themselves. It
-# will help them to not have to different desktop files for Latte
-if [ -f $oldDeskFile ] ; then
-    sudo rm $oldDeskFile
-    echo "Removed old desktop file..."
-fi
-