Deleted History section from README

Didn't seem to really be useful to anyone.

README.md

@@ -60,18 +60,6 @@ in your `~/.zshrc`:
 
     export DEFAULT_USER=<your username>
 
-### History
-
-I discovered the ['agnoster' OMZ theme](https://gist.github.com/agnoster/3712874)
-while looking around for a new OMZ theme. I loved the Powerline styling, but the
-terminal status lines themselves were missing a lot of the information I like
-having. So, I started building on-top of the 'agnoster' theme, changing some
-things as I went.
-
-This theme was first announced [on my blog](http://bhilburn.org/powerlevel9k-oh-my-zsh-theme/) in December of 2014. At
-the time, the theme was missing some of the more advanced Git information. [Tom Upton](http://www.thomasupton.com/) then [helped me](http://bhilburn.org/powerlevel9k-improved-git-repo-information/) get things
-fixed up with [his `vcs_info` hooks](https://github.com/tupton/dotfiles/blob/master/zsh/zshrc).
-
 ### Bugs / Contact
 
 If you have any requests or bug reports, please use the tracker in this Github