Hot fix after #4785 (#4810)

Signed-off-by: Anatoly Myachev <[email protected]>

Author: anmyachev

.github/workflows/inductor-tests-reusable.yml

@@ -29,7 +29,6 @@ permissions: read-all
 env:
   PYTHON_VERSION: "${{ inputs.python_version }}"
   PYTORCH_REPO: "${{ inputs.pytorch_repo }}"
-  TRITON_LESS_FLEX_ATTN_BWD_CONFIGS: 1
 
 jobs:
   build:
@@ -72,6 +71,7 @@ jobs:
       - name: Run inductor tests
         run: |
           export PYTORCH_TESTING_DEVICE_ONLY_FOR="xpu"
+          export TRITON_LESS_FLEX_ATTN_BWD_CONFIGS="1"
           bash scripts/test-pytorch.sh ${{ inputs.suite }}
 
       - name: Report environment details

.github/workflows/inductor-tests-windows.yml

@@ -39,7 +39,6 @@ env:
   PYTHONIOENCODING: utf-8
   PYTHON_VERSION: "${{ inputs.python_version || '3.10' }}"
   NEW_WORKSPACE: C:\gh${{ github.run_id }}
-  TRITON_LESS_FLEX_ATTN_BWD_CONFIGS: 1
 
 jobs:
   build:
@@ -145,6 +144,7 @@ jobs:
           cd ${{ env.NEW_WORKSPACE }}
 
           $env:PYTORCH_TESTING_DEVICE_ONLY_FOR = "bmg"
+          $env:TRITON_LESS_FLEX_ATTN_BWD_CONFIGS = "1"
           bash scripts/test-pytorch.sh ${{ inputs.suite }}
 
       - name: Upload test logs