Removed Drone Attribute

CONTRIBUTING.md

@@ -1,7 +1,5 @@
 # Contributing to Gitote
 
-> This guidelines sheet is forked from [CONTRIBUTING.md](https://github.com/drone/drone/blob/8d9c7cee56d6c2eac81dc156ce27be6716d97e68/CONTRIBUTING.md).
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 Gitote is not perfect, and it has bugs or incomplete features in rare cases. You're welcome to tell us, or to contribute some code. This document describes details about how can you contribute to Gitote project.
 
 ## Contribution guidelines