Remove redundant dotnet build step from build workflow (#23)

* Initial plan

* Remove redundant dotnet build step, dotnet publish already builds

Co-authored-by: RussKie <4403806+RussKie@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: RussKie <4403806+RussKie@users.noreply.github.com>

Author: Copilot

.github/workflows/build_plugin.yml

@@ -24,10 +24,8 @@ jobs:
     - name: Restore
       run: dotnet restore --verbosity q --nologo
 
-    - name: Build & package with `dotnet`
-      run: |
-        dotnet build -c Release --verbosity q --nologo
-        dotnet publish --configuration Release --verbosity q --nologo
+    - name: Publish with `dotnet`
+      run: dotnet publish --configuration Release --verbosity q --nologo
 
     # - name: Push to `Nuget.org` nuget feed
     #   run: |