If you wish to remove a service from the context menu (e.g. Evernote’s “Add to Evernote” or Wunderlist’s “Add to Wunderlist” menu items), follow these steps:
1) Open System Preferences
2) Go to Keyboard
3) Select Shortcuts tab
4) Click on Services in left hand side list
Now all you need to do is de-select services which you want removed from the context menu.