.github: Remove concurrency check in on-labelled workflows.

Apparently you can't use `${{ github.event.number }}` in a concurrency
block in a job that calls a reusable workflow. :(

(cherry picked from commit f5f50b29e6)

.github/workflows/OnPRCPCheck.yml

@@ -7,9 +7,9 @@ on:
 jobs:
   PRCPCheck:
     if: ${{ github.event.label.name == vars.CHERRY_PICK_TEST_LABEL }}
-    concurrency:
-      group: cpcheck-${{ github.event.number }}
-      cancel-in-progress: true
+#    concurrency:
+#      group: cpcheck-${{ github.event.number }}
+#      cancel-in-progress: true
     name: "run-cpcheck"
     uses: asterisk/asterisk-ci-actions/.github/workflows/AsteriskPRCPCheck.yml@main
     secrets:

.github/workflows/OnPRMergeApproved.yml

@@ -7,9 +7,9 @@ on:
 jobs:
   PRMerge:
     if: contains(fromJSON(vars.MERGE_APPROVED_LABELS), github.event.label.name)
-    concurrency:
-      group: merge-${{ github.event.number }}
-      cancel-in-progress: true
+#    concurrency:
+#      group: merge-${{ github.event.number }}
+#      cancel-in-progress: true
     name: "run-merge"
     uses: asterisk/asterisk-ci-actions/.github/workflows/AsteriskPRMerge.yml@main
     secrets:

.github/workflows/OnPRRecheck.yml

@@ -7,9 +7,9 @@ on:
 jobs:
   PRReCheck:
     if: ${{ github.event.label.name == vars.RECHECKPR_LABEL }}
-    concurrency:
-      group: recheck-${{ github.event.number }}
-      cancel-in-progress: true
+#    concurrency:
+#      group: recheck-${{ github.event.number }}
+#      cancel-in-progress: true
     name: "run-recheck"
     uses: asterisk/asterisk-ci-actions/.github/workflows/AsteriskPRReCheck.yml@main
     secrets: