Update npmpublish.yml

This doesn't need a build step, so... simplify

Author: roblarsen

.github/workflows/npmpublish.yml

@@ -5,26 +5,14 @@ on:
     types: [published]
 
 jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v1
-      - uses: actions/setup-node@v1
-        with:
-          node-version: 12
-      - run: npm ci
-      - run: npm run build
-
   publish-npm:
-    needs: build
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
       - uses: actions/setup-node@v1
         with:
           node-version: 12
           registry-url: https://registry.npmjs.org/
-      - run: npm ci
       - run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{secrets.npm_token}}