Remove unnecessary generic type arguments

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175155365

java/google/registry/flows/custom/EntityChanges.java

@@ -31,8 +31,8 @@ public abstract class EntityChanges {
     // Default both entities to save and entities to delete to empty sets, so that the build()
     // method won't subsequently throw an exception if one doesn't end up being applicable.
     return new AutoValue_EntityChanges.Builder()
-        .setSaves(ImmutableSet.<ImmutableObject>of())
-        .setDeletes(ImmutableSet.<Key<ImmutableObject>>of());
+        .setSaves(ImmutableSet.of())
+        .setDeletes(ImmutableSet.of());
   }
 
   /** Builder for {@link EntityChanges}. */