Remove QA tests from quarantine and remove FF

The feature flag has been removed from the codebase so is
no longer needed in the tests.

qa/qa/specs/features/api/3_create/gitaly/distributed_reads_spec.rb

@@ -5,8 +5,7 @@ require 'parallel'
 module QA
   RSpec.describe 'Create' do
     context 'Gitaly' do
-      # Issue to track removal of feature flag: https://gitlab.com/gitlab-org/quality/team-tasks/-/issues/602
-      describe 'Distributed reads', :orchestrated, :gitaly_cluster, :skip_live_env, :requires_admin, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/322814', type: :investigating } do
+      describe 'Distributed reads', :orchestrated, :gitaly_cluster, :skip_live_env, :requires_admin do
         let(:number_of_reads_per_loop) { 9 }
         let(:praefect_manager) { Service::PraefectManager.new }
         let(:project) do
@@ -17,14 +16,9 @@ module QA
         end
 
         before do
-          Runtime::Feature.enable(:gitaly_distributed_reads)
           praefect_manager.wait_for_replication(project.id)
         end
 
-        after do
-          Runtime::Feature.disable(:gitaly_distributed_reads)
-        end
-
         it 'reads from each node', testcase: 'https://gitlab.com/gitlab-org/quality/testcases/-/issues/979' do
           pre_read_data = praefect_manager.query_read_distribution
 

qa/qa/specs/features/api/3_create/gitaly/praefect_replication_queue_spec.rb

@@ -4,7 +4,7 @@ require 'parallel'
 
 module QA
   RSpec.describe 'Create' do
-    context 'Gitaly Cluster replication queue', :orchestrated, :gitaly_cluster, :skip_live_env, quarantine: { issue: 'https://gitlab.com/gitlab-org/gitlab/-/issues/331989', type: :investigating } do
+    context 'Gitaly Cluster replication queue', :orchestrated, :gitaly_cluster, :skip_live_env do
       let(:praefect_manager) { Service::PraefectManager.new }
       let(:project) do
         Resource::Project.fabricate! do |project|