xclip does not work on headless linux (github actions)

.github/workflows/dotnet-core.yml

@@ -22,14 +22,12 @@ jobs:
     - name: Install dependencies
       run: |
         dotnet restore
-        sudo apt-get install xclip
 
     - name: Build Debug
       run: dotnet build --configuration Debug --no-restore
 
     - name: Test
       run: |
-        xclip -version
         dotnet test --no-restore --verbosity normal --collect:"XPlat Code Coverage"  --settings UnitTests/coverlet.runsettings
         mv -v UnitTests/TestResults/*/*.* UnitTests/TestResults/