chore: remove source field from agentic workflows

Agent-Logs-Url: https://github.com/githubnext/agentic-ops/sessions/735622b0-aca3-4052-8f5e-3d02826f3153

Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot

workflows/copilot-token-audit.md

@@ -58,7 +58,6 @@ imports:
       max-patch-size: 51200
   - copilot-setup-steps.yml
   - shared/python-dataviz.md
-source: github/gh-aw/copilot-token-audit.md@8b0bb39a2360d10d3d60f2588d76179cacb4e642
 ---
 
 {{#runtime-import? .github/shared-instructions.md}}

workflows/copilot-token-optimizer.md

@@ -112,7 +112,6 @@ steps:
       else
         echo "ℹ️ No previous optimization history found."
       fi
-source: github/gh-aw/copilot-token-optimizer.md@8b0bb39a2360d10d3d60f2588d76179cacb4e642
 ---
 
 {{#runtime-import? .github/shared-instructions.md}}