Clean up some areas in preparation for externalized codebase

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=221454055

java/google/registry/model/index/DomainApplicationIndex.java

@@ -90,7 +90,6 @@ public class DomainApplicationIndex extends BackupGroupRoot {
    * <p>Consequently within a transaction this method will not return any applications that are not
    * yet committed to datastore, even if called on an updated DomainApplicationIndex instance
    * storing keys to those applications.
-   *
    */
   public static ImmutableSet<DomainApplication> loadActiveApplicationsByDomainName(
       String fullyQualifiedDomainName, final DateTime now) {

java/google/registry/reporting/billing/BillingModule.java

@@ -32,6 +32,7 @@ import org.joda.time.YearMonth;
 public final class BillingModule {
 
   public static final String DETAIL_REPORT_PREFIX = "invoice_details";
+  // TODO(b/119551360): This should be configurable, not hard-coded to Charleston Road Registry.
   public static final String OVERALL_INVOICE_PREFIX = "CRR-INV";
   public static final String INVOICES_DIRECTORY = "invoices";
 

java/google/registry/util/CidrAddressBlock.java

@@ -455,6 +455,8 @@ public class CidrAddressBlock implements Iterable<InetAddress>, Serializable {
     };
   }
 
+  // InetAddresses.coerceToInteger() will be deprecated in the future.
+  @SuppressWarnings("deprecation")
   @Override
   public int hashCode() {
     return InetAddresses.coerceToInteger(ip);