Remove .github/ files copied from master that we don't need on 4.4.x

.github/workflows/build_steps.yml

@@ -179,15 +179,6 @@ jobs:
           name: test_unit_arcticdb_${{matrix.os}}
           path: cpp/out/install/test_unit_arcticdb*
 
-      # We don't do anything with the benchmarks automatically yet, but check that they at least compile and run.
-      - name: Compile C++ Benchmarks
-        if: inputs.job_type == 'cpp-tests'
-        run: cd cpp; cmake --build --preset $ARCTIC_CMAKE_PRESET --target benchmarks -j $CMAKE_BUILD_PARALLEL_LEVEL
-
-      - name: Run C++ Benchmarks
-        if: inputs.job_type == 'cpp-tests'
-        run: cpp/out/${ARCTIC_CMAKE_PRESET}-build/arcticdb/benchmarks
-
       # ========================= build-python-wheels (CIBW) steps =========================
       - name: Get CIBuildWheel image & metadata
         if: inputs.job_type == 'build-python-wheels' && matrix.os == 'linux'
@@ -371,16 +362,6 @@ jobs:
           name: crashdump-${{env.distinguishing_name}}
           path: ${{env.LOCALAPPDATA}}/CrashDumps/
 
-      # Fallback if the clean up at test fixutre tear down fails due to crash or etc
-      - name: Remove AWS testing account and credentials
-        if: always() && inputs.persistent_storage == 'true'
-        run: |
-          python -c "
-          from arcticdb.storage_fixtures.s3 import real_s3_sts_clean_up
-          real_s3_sts_clean_up('${ARCTICDB_REAL_S3_STS_TEST_USERNAME}', '${ARCTICDB_REAL_S3_STS_TEST_ROLE}', '${ARCTICDB_REAL_S3_STS_TEST_POLICY_NAME}')
-          "
-        continue-on-error: true
-
       - name: Disk usage
         if: always()
         run: set +e ; du -m . "${PARALLEL_TEST_ROOT:-/tmp/parallel_test}" | sort -n | tail -n 100 || true; df -h