Remove unnecessary generic type arguments

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

java/google/registry/model/pricing/StaticPremiumListPricingEngine.java

@@ -54,6 +54,6 @@ public final class StaticPremiumListPricingEngine implements PremiumPricingEngin
         premiumPrice.isPresent(),
         premiumPrice.orElse(registry.getStandardCreateCost()),
         premiumPrice.orElse(registry.getStandardRenewCost(priceTime)),
-        Optional.<String>ofNullable(feeClass));
+        Optional.ofNullable(feeClass));
   }
 }