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
diff --git a/gerrit-plugin-api/BUCK b/gerrit-plugin-api/BUCK
index 80ab9a3..6a4e4c0 100644
--- a/gerrit-plugin-api/BUCK
+++ b/gerrit-plugin-api/BUCK
@@ -33,7 +33,6 @@
     '//lib:jsch',
     '//lib:mime-util',
     '//lib:servlet-api-3_1',
-    '//lib/commons:io',
     '//lib/commons:lang',
     '//lib/guice:guice',
     '//lib/guice:guice-assistedinject',
diff --git a/lib/commons/BUCK b/lib/commons/BUCK
index 57d93b3..2ed62f6 100644
--- a/lib/commons/BUCK
+++ b/lib/commons/BUCK
@@ -73,13 +73,6 @@
 )
 
 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',
   sha1 = '2231238e391057a53f92bde5bbc588622c1956c3',
diff --git a/plugins/replication b/plugins/replication
index cb9e977..9098bab 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit cb9e977ddbaa76214c8cefbeb74aa8420ce1d912
+Subproject commit 9098bab8e9da67309e5b0454a97c27e7b4006448