Remove imbalances code (#373)

This PR removes all code related to phantom transfers and tokem
imbalances on tenderly.

The code for token imbalances is currently not used for computing
slippage. Phantom transfers just count as slippage.

In the future, we will use code from
https://github.com/cowprotocol/token-imbalances.

.github/workflows/deploy.yaml

@@ -36,19 +36,3 @@ jobs:
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-
-      - id: meta_db_migration
-        uses: docker/metadata-action@v4
-        with:
-          images: ghcr.io/${{ github.repository }}-db-migration
-          labels: |
-            org.opencontainers.image.licenses=MIT OR Apache-2.0
-
-      - name: Push DB Migration Image
-        uses: docker/build-push-action@v3
-        with:
-          context: internal_transfers/database
-          file: internal_transfers/database/Dockerfile
-          push: true
-          tags: ${{ steps.meta_db_migration.outputs.tags }}
-          labels: ${{ steps.meta_db_migration.outputs.labels }}

.github/workflows/pull-request.yaml

@@ -29,50 +29,3 @@ jobs:
         env:
           # We make a rinkeby request in one unit test
           INFURA_KEY: ${{ secrets.INFURA_KEY }}
-  tenderly-ci:
-    name: Tenderly Lint & Tests
-    runs-on: ubuntu-latest
-    services:
-      postgres:
-        image: postgres
-        env:
-          POSTGRES_PASSWORD: postgres
-        # Set health checks to wait until postgres has started
-        options: >-
-          --health-cmd pg_isready
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-        ports:
-          - 5432:5432
-    steps:
-      - name: Check out Git repository
-        uses: actions/checkout@v2
-
-      - name: DB Migration
-        uses: joshuaavalon/[email protected]
-        with:
-          url: jdbc:postgresql://postgres:5432/postgres
-          user: postgres
-          password: postgres
-        env:
-          FLYWAY_LOCATIONS: filesystem:./internal_transfers/database/sql
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v1
-        with:
-          node-version: 16
-
-      - name: Install Node.js dependencies
-        run: npm ci
-        working-directory: ./internal_transfers/actions
-
-      - name: ESLint
-        run: npm run lint
-        working-directory: ./internal_transfers/actions
-
-      - name: Tests
-        run: npm run test --silent
-        working-directory: ./internal_transfers/actions
-        env:
-          NODE_URL: ${{ secrets.NODE_URL }}