Remove license info from README

We don't need the duplication, especially now that the GitHub interface shows the
license information on the main page of the repository when it can be detected
directly from the LICENSE file.

README.md

@@ -8,11 +8,6 @@ Exercism Exercises in Bash
 
 Please see the [contributing guide](https://github.com/exercism/x-api/blob/master/CONTRIBUTING.md#the-exercise-data)
 
-## License
-
-The MIT License (MIT)
-
-Copyright (c) 2014 Katrina Owen, _@kytrinyx.com
 
 ### Bash icon
 We are using an unofficial logo of the GNU Bash project created by Justin Dorfman. It's not clear under which terms it's released. We believe that our adaptation, changing the colours, falls under fair use.