Here is a short list of things to get rid of if you are going to Windows 10:
This is from a good source, but back up your data before you do anything!
First, turn off Automatic Updates.
Anything that isn't a service item on manual updates can be ignored.
KB2505438 may cause problems and should be replaced with KB2454826
KB2952664 Windows 7 nagware patch that touts the Windows 10 upgrade
KB2976978 Windows 8/8.1 nagware patch that touts the Windows 10 upgrade
KB3021917 Customer Experience Improvement Program update
KB3022345 (replaced by KB306870
Update for customer experience and diagnostic telemetry
KB3035583 Get Windows 10
KB3068708 Update for customer experience and diagnostic telemetry
KB3075249 adds telemetry points to ‘consent.exe’ for remote monitoring of everything
KB3080149 ensures that all “down-level devices” receive the same updates and treatment as Windows 10
Can remove those updates using Control Panel, or command prompt:
wusa /uninstall /kb:3068708 /quiet /norestart
wusa /uninstall /kb:3022345 /quiet /norestart
wusa /uninstall /kb:3075249 /quiet /norestart
wusa /uninstall /kb:3080149 /quiet /norestart