Revert "Adding PR check to ensure JIRA links are present"

This reverts commit 3ae6174050.

.github/workflows/pr_body_check_jira.yml

@@ -1,35 +0,0 @@
----
-name: Check body for reference to jira
-on:
-  pull_request:
-    branches:
-      - release_**
-jobs:
-  pr-check:
-    if: github.repository_owner == 'ansible' && github.repository != 'awx'
-    name: Scan PR description for JIRA links
-    runs-on: ubuntu-latest
-    permissions:
-      packages: write
-      contents: read
-    steps:
-      - name: Check for JIRA lines
-        env:
-          PR_BODY: ${{ github.event.pull_request.body }}
-        run: |
-          echo "$PR_BODY" | grep "JIRA: None" > no_jira
-          echo "$PR_BODY" | grep "JIRA: https://.*[0-9]+"> jira
-          exit 0
-        # We exit 0 and set the shell to prevent the returns from the greps from failing this step
-        # See https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#exit-codes-and-error-action-preference
-        shell: bash {0}
-
-      - name: Check for exactly one item
-        run: |
-          if [ $(cat no_jira jira | wc -l) != 1 ] ; then
-            echo "The PR body must contain exactly one of [ 'JIRA: None' or 'JIRA: <one or more links>' ]"
-            echo "We counted $(cat no_jira jira | wc -l)"
-            exit 255;
-          else
-            exit 0;
-          fi