Removed strange cp line from build script

Author: aheusingfeld

.github/workflows/build_master.yml

@@ -53,7 +53,6 @@ jobs:
       if: startsWith(github.ref, 'refs/tags/')
       run: |
         rm -rf ./build/tmp
-        cp ./docs-ext/curriculum-*.pdf ./build
         zip -r release.zip ./build
     - name: Deploy
       if: startsWith(github.ref, 'refs/tags/')