Remove trailing whitespace in files

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=135386752

java/google/registry/model/eppinput/EppInput.java

@@ -131,7 +131,7 @@ public class EppInput extends ImmutableObject {
     }
     return null;
   }
-  
+
   @SafeVarargs
   @Nullable
   public final <E extends CommandExtension>