fixed two complaints from the "desktop-file-validate" checker program

This patch was contributed by Sebastian Kuzminsky - thanks!


git-svn-id: https://pycam.svn.sourceforge.net/svnroot/pycam/trunk@266 bbaffbd6-741e-11dd-a85d-61de82d9cad9

desktop/pycam.desktop

 [Desktop Entry]
 Version=1.0
-Encoding=UTF-8
 Name=PyCAM
 GenericName=Toolpath Generator
 Comment=Toolpath Generation for 3-Axis CNC machining
 Exec=pycamGUI
 Terminal=false
 Type=Application
-Categories=Development;Engineering;Robotics
+Categories=Development;Engineering;Robotics;