Remove unnecessary generic type arguments

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

java/google/registry/tools/params/EnumParameter.java

@@ -25,6 +25,6 @@ public abstract class EnumParameter<T extends Enum<T>> extends ParameterConverte
 
   @Override
   public T convert(String value) {
-    return Enum.<T>valueOf(new TypeInstantiator<T>(getClass()){}.getExactType(), value);
+    return Enum.valueOf(new TypeInstantiator<T>(getClass()){}.getExactType(), value);
   }
 }