Remove runner specs from crossdatabase list

spec/models/ci/runner_spec.rb

@@ -48,7 +48,7 @@ RSpec.describe Ci::Runner do
       let(:runner) { create(:ci_runner, :group, groups: [group]) }
 
       it 'disallows assigning group if already assigned to a group' do
-        runner.runner_namespaces << build(:ci_runner_namespace)
+        runner.runner_namespaces << create(:ci_runner_namespace)
 
         expect(runner).not_to be_valid
         expect(runner.errors.full_messages).to include('Runner needs to be assigned to exactly one group')

spec/support/database/cross-database-modification-allowlist.yml

@@ -17,7 +17,6 @@
 - "./spec/lib/gitlab/email/handler/create_note_on_issuable_handler_spec.rb"
 - "./spec/models/ci/build_trace_chunk_spec.rb"
 - "./spec/models/ci/job_artifact_spec.rb"
-- "./spec/models/ci/runner_spec.rb"
 - "./spec/models/clusters/applications/runner_spec.rb"
 - "./spec/models/design_management/version_spec.rb"
 - "./spec/models/hooks/system_hook_spec.rb"