Remove queue from full test suite workflow

.github/workflows/test-full.yml

@@ -5,29 +5,8 @@ on:
   workflow_dispatch:
 
 jobs:
-  # This job exists so that PRs from outside the main repo are rejected
-  fail_on_remote:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Code under test must be from a branch in the azimuth-config repo
-        run: exit ${{ github.repository == 'stackhpc/azimuth-config' && '0' || '1' }}
-
-  # We want jobs to wait in a queue for a slot to run, so as not to overload the test infra
-  # GitHub concurrency _almost_ does this, except the queue length is one :-(
-  # There is a feature request for what we need https://github.com/orgs/community/discussions/12835
-  # Until that is implemented, the only other viable option is a busy wait
-  wait_in_queue:
-    needs: [fail_on_remote]
-    runs-on: ubuntu-latest
-    steps:
-      - name: Wait for an available slot
-        uses: stackhpc/github-actions/workflow-concurrency@master
-        with:
-          max-concurrency: 1
-
   # Tests a clean HA deployment + all appliances
   test_clean_ha:
-    needs: [wait_in_queue]
     runs-on: ubuntu-latest
     steps:
       # We need to check out the code under test first in order to use local actions