Buck: Remove unnecessary dependency on gerrit-plugin-gwtui

Change-Id: I6c9532365bea02f6864b433495d3a4eec6d9c967

lib/gerrit/BUCK

diff --git a/lib/gerrit/BUCK b/lib/gerrit/BUCK
index 89c75df..5a4a6fb 100644
--- a/lib/gerrit/BUCK
+++ b/lib/gerrit/BUCK
@@ -10,11 +10,3 @@
   attach_source = False,
   repository = REPO,
 )
-
-maven_jar(
-  name = 'gwtui-api',
-  id = 'com.google.gerrit:gerrit-plugin-gwtui:' + VER,
-  license = 'Apache2.0',
-  attach_source = False,
-  repository = REPO,
-)