Fix mode in benchmark suite

.github/workflows/test.yml

@@ -248,7 +248,7 @@ jobs:
       - name: Run benchmarks
         shell: micromamba-shell {0}
         run: |
-          export PYTENSOR_FLAGS=mode=FAST_COMPILE,warn__ignore_bug_before=all,on_opt_error=raise,on_shape_error=raise,gcc__cxxflags=-pipe
+          export PYTENSOR_FLAGS=warn__ignore_bug_before=all,on_opt_error=raise,on_shape_error=raise,gcc__cxxflags=-pipe
           python -m pytest --runslow --benchmark-only --benchmark-json output.json
       - name: Store benchmark result
         uses: benchmark-action/github-action-benchmark@4bdcce38c94cec68da58d012ac24b7b1155efe8b # v1.20.7