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/domain/fee06/FeeInfoCommandExtensionV06.java

@@ -35,7 +35,7 @@ public class FeeInfoCommandExtensionV06
   public CurrencyUnit getCurrency() {
     return currency;
   }
-  
+
   @Override
   public Optional<DateTime> getEffectiveDate() {
     return Optional.absent();