get rid of preview

.github/workflows/porter_preview_staging_3155.yml

@@ -1,29 +0,0 @@
-"on":
-    pull_request:
-        paths:
-            - '**'
-            - '!.github/workflows/porter_**'
-name: Deploy to Preview Environment
-jobs:
-    porter-deploy:
-        runs-on: ubuntu-latest
-        steps:
-            - name: Checkout code
-              uses: actions/checkout@v4
-            - name: Set Github tag
-              id: vars
-              run: echo "sha_short=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
-            - name: Setup porter
-              uses: porter-dev/setup-porter@v0.1.0
-            - name: Build and deploy preview environment
-              timeout-minutes: 30
-              run: exec porter apply -f ./porter.yaml --preview
-              env:
-                PORTER_APP_NAME: staging
-                PORTER_CLUSTER: "3155"
-                PORTER_HOST: https://dashboard.porter.run
-                PORTER_PR_NUMBER: ${{ github.event.number }}
-                PORTER_PROJECT: "9309"
-                PORTER_REPO_NAME: ${{ github.event.repository.name }}
-                PORTER_TAG: ${{ steps.vars.outputs.sha_short }}
-                PORTER_TOKEN: ${{ secrets.PORTER_APP_9309_3155 }}