[release/v7.4] Github Workflow cleanup (#26334)

Co-authored-by: Travis Plunk <travis.plunk@microsoft.com>

.github/workflows/AssignPrs.yml

@@ -1,30 +0,0 @@
-name: Auto Assign PR Maintainer
-on:
-  issues:
-    types: [opened, edited]
-permissions:
-  contents: read
-
-jobs:
-  run:
-    if: github.repository_owner == 'PowerShell'
-    runs-on: ubuntu-latest
-    permissions:
-      issues: write
-      pull-requests: write
-    steps:
-      - uses: wow-actions/auto-assign@67fafa03df61d7e5f201734a2fa60d1ab111880d # v3.0.2
-        if: github.event.issue.pull_request
-        with:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          # using the `org/team_slug` or `/team_slug` syntax to add git team as reviewers
-          assignees: |
-            TravisEz13
-            daxian-dbw
-            adityapatwardhan
-            iSazonov
-            SeeminglyScience
-          skipDraft: true
-          skipKeywords: wip, draft
-          addReviewers: false
-          numberOfAssignees: 1