chore(workflow): remove deprecated fuzz test statistics action

Eliminated the use of the composite action for generating fuzz test statistics in favor of native CI mode, which provides improved functionality and compatibility.

Author: mrz1836

.github/actions/test-statistics/action.yml

@@ -222,27 +222,6 @@ jobs:
             fi
           fi
 
-      # --------------------------------------------------------------------
-      # Generate fuzz test statistics using composite action
-      # --------------------------------------------------------------------
-      - name: 📊 Calculate fuzz test statistics
-        id: fuzz-summary
-        if: always()
-        uses: ./.github/actions/test-statistics
-        with:
-          matrix-name: "Fuzz Tests (${{ inputs.primary-runner }})"
-          matrix-os: ${{ inputs.primary-runner }}
-          matrix-go-version: ${{ inputs.go-primary-version }}
-          test-exit-code: ${{ steps.run-fuzz-tests.outputs.fuzz-exit-code || '0' }}
-          output-mode: "FULL"
-          job-status: ${{ job.status }}
-          test-start-time: ${{ steps.fuzz-timer.outputs.fuzz-start || '0' }}
-          race-detection-enabled: "false"
-          code-coverage-enabled: "false"
-          fuzz-run: "true"
-          failures-file: "fuzz-failures.txt"
-          output-file: "fuzz-output.log"
-
       # --------------------------------------------------------------------
       # Collect performance cache statistics
       # --------------------------------------------------------------------