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/common/TimedTransitionProperty.java

@@ -171,7 +171,7 @@ public class TimedTransitionProperty<V, T extends TimedTransitionProperty.TimedT
 
   /**
    * Validates a new set of transitions and returns the resulting TimedTransitionProperty map.
-   * 
+   *
    * @param newTransitions map from date time to transition value
    * @param transitionClass the class of transitions in this map
    * @param allowedTransitions optional map of all possible state-to-state transitions