hide dropping message in json package file (#6070)

Author: d-a-v

package/drop_versions.py

@@ -19,9 +19,7 @@ def drop_version(todrop, obj):
     out = [];
     for o in obj:
         version = o['version'].encode('ascii')
-        if version == todrop:
-            print("Dropping version {0}".format(todrop))
-        else:
+        if version != todrop:
             out.append(o)
     return out