Update app-runtime-platform.md

Remove Marc Paquette from reviewers

Author: Marc Paquette

toc/working-groups/app-runtime-platform.md

@@ -73,8 +73,6 @@ areas:
     github: PlamenDoychev
   - name: Vladimir Savchenko
     github: vlast3k
-  - name: Marc Paquette
-    github: MarcPaquette
   repositories:
   - cloudfoundry/archiver
   - cloudfoundry/auction