If you want to remove the "show more options" entry from the context menu, open Command Prompt with admin rights and run the following command:
reg add "HKCU\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}\InprocServer32" /f /ve
If you want to add the "show more options" entry back to the context menu, open Command Prompt with admin rights and run the following command:
reg delete "HKEY_CURRENT_USER\Software\Classes\CLSID\{86ca1aa0-34aa-4e8b-a509-50c905bae2a2}" /f
After executing the command, you'll see the "The operation completed successfully" message to confirm that it went through. You will have to restart (Windows Explorer or) your computer for the changes to take effect.