remove uneeded VERSION file
diff --git a/VERSION b/VERSION
deleted file mode 100644
index 5a07e82..0000000
--- a/VERSION
+++ /dev/null
@@ -1,5 +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 = '2.13-SNAPSHOT'
-