Remove VERSION file

Git describe output will be used as the version which is better than
manually having to change the VERSION file.

Change-Id: I8f98a9796d0c198ec5dad4a5bf62b9f28af5f5c6
diff --git a/VERSION b/VERSION
deleted file mode 100644
index cfb4e97..0000000
--- a/VERSION
+++ /dev/null
@@ -1,4 +0,0 @@
-# Used by BUCK to include "Implementation-Version" in plugin Manifest.
-# If this file doesn't exist the output of 'git describe' is used
-# instead.
-PLUGIN_VERSION = '2.12-SNAPSHOT'