Disable default view when offering module is disabled
hook_disable() is what you are looking for:


  Perform necessary actions before module is disabled.
  
  The hook is called every time the module is disabled


Remember to do inverse actions with hook_enable(), which is used when a modules is enabled, install hooks don't fire when a module is re enabled.

Also if you need to track enable/disabling of another module you can use hook_modules_disabled() and hook_modules_enabled()

(it looks like you found it, but adding an answer for others is always good).