Removing old code path for search_files_by_content

In 11.8, we added a fix for the SearchFilesByContent RPC in gitaly to
send back the response in chunks. However, we kept in the old code path
for backwards compatibility. Now that the change is fully deployed, we
can remove that old codepath.

GITALY_SERVER_VERSION

-1.21.0
+1.23.0
\ No newline at end of file

lib/gitlab/gitaly_client/repository_service.rb

@@ -324,8 +324,8 @@ module Gitlab
         GitalyClient.call(@storage, :repository_service, :search_files_by_name, request, timeout: GitalyClient.fast_timeout).flat_map(&:files)
       end
 
-      def search_files_by_content(ref, query, chunked_response: true)
-        request = Gitaly::SearchFilesByContentRequest.new(repository: @gitaly_repo, ref: ref, query: query, chunked_response: chunked_response)
+      def search_files_by_content(ref, query)
+        request = Gitaly::SearchFilesByContentRequest.new(repository: @gitaly_repo, ref: ref, query: query)
         response = GitalyClient.call(@storage, :repository_service, :search_files_by_content, request)
 
         search_results_from_response(response)
@@ -340,12 +340,6 @@ module Gitlab
         gitaly_response.each do |message|
           next if message.nil?
 
-          # Old client will ignore :chunked_response flag
-          # and return messages with `matches` key.
-          # This code path will be removed post 12.0 release
-          if message.matches.any?
-            matches += message.matches
-          else
           current_match << message.match_data
 
           if message.end_of_match
@@ -353,7 +347,6 @@ module Gitlab
             current_match = +""
           end
         end
-        end
 
         matches
       end

spec/lib/gitlab/git/repository_spec.rb

@@ -619,16 +619,6 @@ describe Gitlab::Git::Repository, :seed_helper do
         repository.search_files_by_content('search-files-by-content', 'search-files-by-content-branch')
       end
     end
-
-    it_should_behave_like 'search files by content' do
-      let(:search_results) do
-        repository.gitaly_repository_client.search_files_by_content(
-          'search-files-by-content-branch',
-          'search-files-by-content',
-          chunked_response: false
-        )
-      end
-    end
   end
 
   describe '#find_remote_root_ref' do