Remove duplicate sandbox build

Author: stevebux

.github/workflows/stage-3-build.yaml

@@ -202,34 +202,12 @@ jobs:
     steps:
       - name: "Checkout code"
         uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
-      - name: "Build proxy"
+      - name: "Build proxies"
         uses: ./.github/actions/build-proxies
         with:
           version: "${{ inputs.version }}"
           environment: ${{ needs.pr-create-dynamic-environment.outputs.environment_name }}
           apimEnv: "internal-dev-pr"
           runId: "${{ github.run_id }}"
-          buildSandbox: false
-          releaseVersion: ${{ github.head_ref || github.ref_name }}
-  artefact-sandbox-proxy:
-    name: "Build proxy for sandbox"
-    runs-on: ubuntu-latest
-    if: always() && !failure() && inputs.deploy_proxy == 'true'
-    needs: [artefact-oas-spec-sandbox, artefact-oas-spec, pr-create-dynamic-environment]
-    timeout-minutes: 10
-    env:
-      PROXYGEN_API_NAME: nhs-notify-supplier
-      APP_CLIENT_ID: ${{ secrets.APP_CLIENT_ID }}
-      APP_PEM_FILE: ${{ secrets.APP_PEM_FILE }}
-    steps:
-      - name: "Checkout code"
-        uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
-      - name: "Build proxy for sandbox"
-        uses: ./.github/actions/build-proxies
-        with:
-          version: "${{ inputs.version }}"
-          environment: ${{ needs.pr-create-dynamic-environment.outputs.environment_name }}
-          apimEnv: "internal-dev-sandbox"
-          runId: "${{ github.run_id }}"
           buildSandbox: true
           releaseVersion: ${{ github.head_ref || github.ref_name }}