Nexus 7 Tips

How To Remove Google Korean/Pinyin Keyboard Without Root

    Just go to Settings -> Apps and then swipe to the left to get to the "ALL" tab. Look for Google Korean keyboard and/or Google Pinyin on the app list. Click on it and in the App info click "Disable". Restart your Nexus 7 and the two keyboard will no longer be listed in the Language and Input Settings.  You can disable other unwanted apps this way as well.

See sample images below:
(* I have already disabled the two in my Nexus 7 hence the "Disabled" listing in the Apps list)