How to disable text format options in CKEditor
The simplify module will allow you to hide text format selection, and a lot of other bling too: https://drupal.org/project/simplify

The simplify module allows you to hide the text format selection globally on all content types, as in the attached screen. Alternately, you can disable text format selection for each content type individually.



I've really only used it one one site so far, but haven't had any trouble.