Phase C: remove redundant npmFeed parameter (#196)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: bwateratmsft

.config/build.yml

@@ -34,5 +34,4 @@ extends:
   template: azdo-pipelines/1es-mb-main.yml@azExtTemplates # Use the main build template
   parameters:
     signType: none
-    npmFeed: ${{ variables.npmFeed }}
     feedBaseUrl: ${{ variables.feedBaseUrl }}