Remove some workflows that won't work on Forks anyway

.github/workflows/auto-approve.yml

@@ -1,11 +0,0 @@
-name: Auto approve
-on: [pull_request]
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: hmarr/auto-approve-action@v2.0.0
-      if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
-      with:
-        github-token: "${{ secrets.GITHUB_TOKEN }}"
-

.github/workflows/autoassign.yml

@@ -1,10 +0,0 @@
-name: AutoAssigner
-on: [pull_request]
-jobs:
-  assignAuthor:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: samspills/assign-pr-to-author@v1.0
-        if: github.event_name == 'pull_request' && github.event.action == 'opened'
-        with:
-          repo-token: '${{ secrets.GITHUB_TOKEN }}'

.github/workflows/greetings.yml

@@ -1,42 +0,0 @@
-name: Greetings
-on: [pull_request, issues]
-jobs:
-  greeting:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/first-interaction@v1
-      with:
-        repo-token: ${{ secrets.GITHUB_TOKEN }}
-        issue-message: |-
-          Hello!
-          
-          Welcome to the Bitcask project! Someone will respond to your issue pretty quickly,
-          the author is pretty responsive 😀 In the meantime; please make sure you have read
-          the [Contributing](https://github.com/prologic/bitcask/blob/master/CONTRIBUTING.md)
-          and [Code of Conduct](https://github.com/prologic/bitcask/blob/master/CODE_OF_CONDUCT.md)
-          documents.
-          
-          If possible please also make sure your Bug Report or Feature Request is clearly defined
-          with either examples or a reproducible case (_if a bug_).
-          
-          Thank you 😃
-        pr-message: |-
-          Hello!
-          
-          Welcome to the Bitcask project!
-          
-          Thank you for your Pull Request and Contribution! We highly value all contributions to this Project!
-          Your Pull Request will be reviewed shortly! The author is pretty responsive 😀
-           In the meantime; please make sure you have read
-          the [Contributing](https://github.com/prologic/bitcask/blob/master/CONTRIBUTING.md)
-          and [Code of Conduct](https://github.com/prologic/bitcask/blob/master/CODE_OF_CONDUCT.md)
-          documents.
-          
-          Please also ensure that your PR passes all the CI/CD tests -- They will appear in your PR
-          towards the bottom just above the comment box.
-          
-          Also in addition, if you haven't already; please ammend your PR by modifying the
-          [AUTHORS](https://github.com/prologic/bitcask/blob/master/AUTHORS) file and adding
-          yourself to it! We like to recognize and peserve in Git history all contributors!
-          
-          Thank you 😃

.github/workflows/label.yml

@@ -1,9 +0,0 @@
-name: Labeler
-on: [pull_request]
-jobs:
-  label:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/labeler@v2
-      with:
-        repo-token: "${{ secrets.GITHUB_TOKEN }}"