Simplify VerifiableRegistry scoping

The `VerifiableRegistry.available_verifiables` scope was meant to
invoke `synced`. And in that case, the overrides are unnecessary.

ee/app/models/concerns/geo/verifiable_registry.rb

@@ -18,21 +18,6 @@ module Geo
       def verification_state_model_key
         self::MODEL_FOREIGN_KEY
       end
-
-      override :verification_pending_batch_relation
-      def verification_pending_batch_relation(batch_size:)
-        super.synced
-      end
-
-      override :verification_failed_batch_relation
-      def verification_failed_batch_relation(batch_size:)
-        super.synced
-      end
-
-      override :needs_verification_relation
-      def needs_verification_relation
-        super.synced
-      end
     end
 
     included do
@@ -40,7 +25,7 @@ module Geo
 
       sha_attribute :verification_checksum_mismatched
 
-      scope :available_verifiables, -> { all }
+      scope :available_verifiables, -> { synced }
 
       override :clear_verification_failure_fields!
       def clear_verification_failure_fields!

ee/app/models/concerns/geo/verifiable_replicator.rb

@@ -178,7 +178,7 @@ module Geo
         # Bonus: This causes the progress bar to be hidden.
         return unless verification_enabled?
 
-        registry_class.synced.verification_succeeded.count
+        registry_class.verification_succeeded.count
       end
 
       def verification_failed_count
@@ -186,7 +186,7 @@ module Geo
         # Bonus: This causes the progress bar to be hidden.
         return unless verification_enabled?
 
-        registry_class.synced.verification_failed.count
+        registry_class.verification_failed.count
       end
 
       def verification_total_count
@@ -194,7 +194,7 @@ module Geo
         # Bonus: This causes the progress bar to be hidden.
         return unless verification_enabled?
 
-        registry_class.synced.available_verifiables.count
+        registry_class.available_verifiables.count
       end
     end
 

ee/lib/gitlab/geo/verification_state.rb

@@ -114,40 +114,25 @@ module Gitlab
         # query.
         #
         def verification_pending_batch(batch_size:)
-          relation = verification_pending_batch_relation(batch_size: batch_size)
+          relation = verification_pending.order(Gitlab::Database.nulls_first_order(:verified_at)).limit(batch_size) # rubocop:disable CodeReuse/ActiveRecord
 
           start_verification_batch(relation)
         end
 
-        # Overridden by Geo::VerifiableRegistry
-        def verification_pending_batch_relation(batch_size:)
-          verification_pending.order(Gitlab::Database.nulls_first_order(:verified_at)).limit(batch_size) # rubocop:disable CodeReuse/ActiveRecord
-        end
-
         # Returns IDs of records that failed to verify (calculate and save checksum).
         #
         # Atomically marks those records "verification_started" in the same DB
         # query.
         #
         def verification_failed_batch(batch_size:)
-          relation = verification_failed_batch_relation(batch_size: batch_size)
+          relation = verification_failed.verification_retry_due.order(Gitlab::Database.nulls_first_order(:verification_retry_at)).limit(batch_size) # rubocop:disable CodeReuse/ActiveRecord
 
           start_verification_batch(relation)
         end
 
-        # Overridden by Geo::VerifiableRegistry
-        def verification_failed_batch_relation(batch_size:)
-          verification_failed.verification_retry_due.order(Gitlab::Database.nulls_first_order(:verification_retry_at)).limit(batch_size) # rubocop:disable CodeReuse/ActiveRecord
-        end
-
         # @return [Integer] number of records that need verification
         def needs_verification_count(limit:)
-          needs_verification_relation.limit(limit).count # rubocop:disable CodeReuse/ActiveRecord
-        end
-
-        # Overridden by Geo::VerifiableRegistry
-        def needs_verification_relation
-          needs_verification
+          needs_verification.limit(limit).count # rubocop:disable CodeReuse/ActiveRecord
         end
 
         # @return [Integer] number of records that need reverification