ci: remove WIP

We're able to use draft PR already

.github/workflows/wip.yml

@@ -1,12 +0,0 @@
-name: WIP
-on:
-  pull_request:
-    types: [opened, synchronize, reopened, edited]
-
-jobs:
-  wip:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: wip/action@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}