fix(packaging): remove unrecognized categories from .desktop file

Author: BrycensRanch

packaging/usr/share/applications/io.github.SnapXL.SnapX.desktop

@@ -9,7 +9,7 @@ Icon=io.github.SnapXL.SnapX
 Terminal=false
 Type=Application
 GenericName=Screenshot tool & sharing tool
-Categories=ScreenCapture;Graphics;Utility;Productivity
+Categories=Graphics;Utility
 StartupNotify=true
 Keywords=ShareX;sharenix;sharexen;share;imgur;ocr;ftp;gif;screenshot
 MimeType=image/png;image/jpeg;image/jpg;image/gif;image/tiff;image/bmp;image/x-raw;video/mp4;video/x-msvideo;video/x-flv;video/webm;application/zip;application/x-7z-compressed;application/x-sxcu;video/x-matroska;