ci: use --prepare instead of --setup for DB cleanup

Author: MegaRedHand

.github/workflows/pr_perf_blocks_exec.yaml

@@ -80,9 +80,12 @@ jobs:
         run: |
           sudo swapoff -a
           BINS="base,head"
-          hyperfine --setup "./bin/ethrex-base removedb" -w 5 -N -r 10 --show-output --export-markdown "bench_pr_comparison.md" \
-          -L bin "$BINS" -n "{bin}" \
-          "./bin/ethrex-{bin} --network fixtures/genesis/perf-ci.json --force import ./fixtures/blockchain/l2-1k-erc20.rlp --removedb"
+          # Run hyperfine benchmark, removing the database before each run.
+          # Pipe `yes` into the remove command to automatically confirm.
+          hyperfine -w 5 -N -r 10 --show-output --export-markdown "bench_pr_comparison.md" \
+            -L bin "$BINS" -n "{bin}" \
+            --prepare "yes | ./bin/ethrex-{bin} removedb" \
+            "./bin/ethrex-{bin} --network fixtures/genesis/perf-ci.json --force import ./fixtures/blockchain/l2-1k-erc20.rlp"
           echo -e "## Benchmark Block Execution Results Comparison Against Main\n\n$(cat bench_pr_comparison.md)" > bench_pr_comparison.md
       - name: Upload PR results
         uses: actions/upload-artifact@v4