Remove unnecessary dependency on commons-io

commons-io is no longer used in core Gerrit.  Remove the dependency and
stop exporting it in the plugin API.

Also update the replication plugin to the latest revision:

- Bundle commons-io since gerrit core no longer provides it

Change-Id: I6bcf6ec6134039de7d8f9c1670167a0318510745

gerrit-plugin-api/BUCK

@@ -33,7 +33,6 @@ java_library(
     '//lib:jsch',
     '//lib:mime-util',
     '//lib:servlet-api-3_1',
-    '//lib/commons:io',
     '//lib/commons:lang',
     '//lib/guice:guice',
     '//lib/guice:guice-assistedinject',