Remove blobs_fetch_in_batches feature flag

changelogs/unreleased/id-remove-blobs_fetch_in_batches-feature-flag.yml

+---
+title: Remove blobs_fetch_in_batches feature flag
+merge_request: 29069
+author:
+type: added

lib/gitlab/git/blob.rb

@@ -86,13 +86,9 @@ module Gitlab
         # to the caller to limit the number of blobs and blob_size_limit.
         #
         def batch(repository, blob_references, blob_size_limit: MAX_DATA_DISPLAY_SIZE)
-          if Feature.enabled?(:blobs_fetch_in_batches, default_enabled: true)
           blob_references.each_slice(BATCH_SIZE).flat_map do |refs|
             repository.gitaly_blob_client.get_blobs(refs, blob_size_limit).to_a
           end
-          else
-            repository.gitaly_blob_client.get_blobs(blob_references, blob_size_limit).to_a
-          end
         end
 
         # Returns an array of Blob instances just with the metadata, that means

spec/lib/gitlab/git/blob_spec.rb

@@ -301,7 +301,6 @@ describe Gitlab::Git::Blob, :seed_helper do
         stub_const('Gitlab::Git::Blob::BATCH_SIZE', 2)
       end
 
-      context 'blobs_fetch_in_batches is enabled' do
       it 'fetches the blobs in batches' do
         expect(client).to receive(:get_blobs).with(first_batch, limit).ordered
         expect(client).to receive(:get_blobs).with(second_batch, limit).ordered
@@ -310,19 +309,6 @@ describe Gitlab::Git::Blob, :seed_helper do
         subject
       end
     end
-
-      context 'blobs_fetch_in_batches is disabled' do
-        before do
-          stub_feature_flags(blobs_fetch_in_batches: false)
-        end
-
-        it 'fetches the blobs in a single batch' do
-          expect(client).to receive(:get_blobs).with(blob_references, limit)
-
-          subject
-        end
-      end
-    end
   end
 
   describe '.batch_metadata' do