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',

lib/commons/BUCK

@@ -72,13 +72,6 @@ maven_jar(
   exclude = ['META-INF/LICENSE'],
 )
 
-maven_jar(
-  name = 'io',
-  id = 'commons-io:commons-io:1.4',
-  sha1 = 'a8762d07e76cfde2395257a5da47ba7c1dbd3dce',
-  license = 'Apache2.0',
-)
-
 maven_jar(
   name = 'validator',
   id = 'commons-validator:commons-validator:1.4.1',