Update main.yml

Author: egil

.github/workflows/main.yml

@@ -11,8 +11,5 @@ jobs:
     - uses: actions/setup-dotnet@v1
       with:
         dotnet-version: '3.1.100'  
-    - name: Get the version
-      id: get_version
-      run: echo ::set-output name=VERSION::${GITHUB_REF/refs\/tags\//}
-    - run: dotnet build -c Release -p:version=${{ steps.get_version.outputs.VERSION }} /nowarn:CS1591
+    - run: dotnet build -c Release /nowarn:CS1591
     - run: dotnet test -c Release /nowarn:CS1591