Perform some minor test cleanup

This standardizes use of annotations/inheritance/formatting across
tests, to make the code more legible and consistent.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=161810734

javatests/google/registry/flows/domain/DomainAllocateFlowTest.java

@@ -419,13 +419,6 @@ public class DomainAllocateFlowTest
     doSuccessfulTest(13);
   }
 
-  @Test
-  @Override
-  public void testRequiresLogin() throws Exception {
-    createTld("tld");
-    super.testRequiresLogin();
-  }
-
   @Test
   public void testSuccess_secDns() throws Exception {
     setupDomainApplication("tld", TldState.QUIET_PERIOD);