Revert "Fix E2E performance workload (#3528)" (#4416)

No more problems when installing this way. Moreover, `install.py` also
downloads datasets, I'm not sure why I didn't see this problem in the
logs last time. Maybe the datasets were cached.

This reverts commit 03e9323.


https://github.com/intel/intel-xpu-backend-for-triton/actions/runs/15442076981
(installation passed)

Author: anmyachev

.github/workflows/e2e-reusable.yml

@@ -210,7 +210,7 @@ jobs:
         if: ${{ inputs.suite == 'torchbench' }}
         run: |
           cd benchmark
-          pip install -r requirements.txt
+          python install.py
           pip install -e .
 
       - name: Run e2e ${{ inputs.test_mode }} tests