Remove unused import in OutgoingEmailValidationListener

Change-Id: Ie7e624917751c9505a65a306b13ba434f26bc99b
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/validators/OutgoingEmailValidationListener.java b/gerrit-server/src/main/java/com/google/gerrit/server/validators/OutgoingEmailValidationListener.java
index 002eb4b..5b3f158 100644
--- a/gerrit-server/src/main/java/com/google/gerrit/server/validators/OutgoingEmailValidationListener.java
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/validators/OutgoingEmailValidationListener.java
@@ -15,7 +15,6 @@
 package com.google.gerrit.server.validators;
 
 import com.google.gerrit.extensions.annotations.ExtensionPoint;
-import com.google.gerrit.server.account.CreateGroupArgs;
 import com.google.gerrit.server.mail.Address;
 import com.google.gerrit.server.mail.EmailHeader;