Remove redundant type argument

Change-Id: Ibbddcd1110e81dc3e29dba4383f145391f994ec5

src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java

diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java b/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java
index e2eec41..c4bdd7e 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java
@@ -123,7 +123,7 @@
     validate(input, groupInfo);
     createGroup(input, groupInfo);
 
-    return Response.<String> ok("OK");
+    return Response.ok("OK");
   }
 
   private void validate(Input input, GroupInfo groupInfo)