ci: rm `test-sdk` job from submodule_update.yml

The approach to build SDK since 3.0 release series is changed and will
be under development for some period of time. So the `test-sdk` job is
just irrelevant now and expected to fail. Let's remove the job until it
is clear how to implement the integration testing in the scope of the
new approach for SDK build.

NO_DOC=ci
NO_TEST=ci
NO_CHANGELOG=ci

.github/workflows/submodule_update.yml

@@ -58,49 +58,3 @@ jobs:
         uses: ./.github/actions/report-job-status
         with:
           bot-token: ${{ secrets.VKTEAMS_BOT_TOKEN }}
-
-  test-sdk:
-    # Run on push to the 'master' and release branches in tarantool/tarantool
-    # repo only.
-    if: github.repository == 'tarantool/tarantool'
-
-    runs-on: [ self-hosted, Linux, x86_64, flavor-1-2 ]
-
-    needs: update-ee
-
-    env:
-      EE_SHA: ${{ needs.update-ee.outputs.commit-sha }}
-
-    steps:
-      - name: Set sdk submodule name
-        run: echo "SDK_SUBMODULE=tarantool-$(basename ${{ github.ref_name }})" >> $GITHUB_ENV
-
-      - name: Update submodule ${{ env.SDK_SUBMODULE }} in tarantool/sdk@${{ env.SDK_FEATURE_BRANCH }}
-        uses: tarantool/actions/update-submodule@master
-        id: test-sdk
-        with:
-          repository: 'tarantool/sdk'
-          github_token: ${{ secrets.EE_UPDATE_SUBMODULE_TOKEN }}
-          checkout_branch: 'master'
-          # Same branch name pattern as used in sdk_test workflow
-          feature_branch: ${{ env.SDK_FEATURE_BRANCH }}
-          submodule: ${{ env.SDK_SUBMODULE }}
-          update_to: ${{ env.EE_SHA }}
-          create_pr: 'false'
-          commit_message: |
-            test: ee@${{ github.ref_name }} -> sdk:${{ env.SDK_SUBMODULE }}
-
-            bump submodule ${{ env.SDK_SUBMODULE }} to commit
-            tarantool/tarantool-ee@${{ env.EE_SHA }},
-            which is the HEAD of branch
-            tarantool/tarantool-ee@${{ env.EE_FEATURE_BRANCH }},
-            just updated with commit
-            tarantool/tarantool@${{ github.sha }},
-            which is the HEAD of branch
-            tarantool/tarantool@${{ github.ref_name }}.
-
-      - name: Send VK Teams message on failure
-        if: failure()
-        uses: ./.github/actions/report-job-status
-        with:
-          bot-token: ${{ secrets.VKTEAMS_BOT_TOKEN }}