Remove unnecessary generic type arguments

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

java/google/registry/request/auth/AuthModule.java

@@ -30,7 +30,7 @@ public class AuthModule {
   @Provides
   ImmutableList<AuthenticationMechanism> provideApiAuthenticationMechanisms(
       OAuthAuthenticationMechanism oauthAuthenticationMechanism) {
-    return ImmutableList.<AuthenticationMechanism>of(
+    return ImmutableList.of(
         oauthAuthenticationMechanism);
   }