Github-api fork is not longer used

Change-Id: Ib0130ce36e78dbbe1cc7eb019bcce32e377f6567

README.md

diff --git a/README.md b/README.md
index d01069d..9d08639 100644
--- a/README.md
+++ b/README.md
@@ -86,19 +86,6 @@
   cd github
   mvn -DjavaVersion=1.8 install
 
-### GitHub API
-
-In order to access GitHub API, we have used the lucamilanesio fork of Kohsuke API 
-layer hosted on GitHub at https://github.com/lucamilanesio/github-api.
-
-You need to clone and build the GitHub API as pre-requisite for building the
-GitHub plugin for Gerrit.
-
-Example:
-  git clone https://github.com/lucamilanesio/github-api.git
-  cd github-api
-  mvn install -DskipTests=true
-
 ### singleusergroup plugin
 
 You need to install the singleusergroup plugin for Gerrit