[CI] Simplify unzip in 'build-scoreboard' job (#822)

Author: aobolensk

.github/workflows/pages.yml

@@ -87,13 +87,7 @@ jobs:
       - name: Extract performance data
         run: |
           mkdir -p build/perf_stat_dir
-          # The uploaded artifact contains a nested perf-stat.zip inside.
-          # First unzip extracts the inner archive; the second extracts perf_stat_dir/*.
           unzip -o perf-stat.zip -d .
-          if [ -f "perf-stat.zip" ]; then
-            mv -f perf-stat.zip perf-stat-inner.zip
-            unzip -o perf-stat-inner.zip -d .
-          fi
       - name: CMake configure
         run: |
           cmake -S . -B build -DUSE_SCOREBOARD=ON -DPPC_BUILD_COMPONENTS=OFF