Revert "Test selfhosted runner"

This reverts commit c1d9d89.

.github/workflows/build-test.yml

@@ -8,17 +8,21 @@ on:
 
 jobs:
   build:
-    runs-on: Mirai
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: 8.0.x
       - name: Install dependencies
         run: dotnet restore
       - name: Build
         run: dotnet build --configuration Release --no-restore
       - name: SS14.Launcher.Tests
         run: dotnet test SS14.Launcher.Tests/SS14.Launcher.Tests.csproj -v n
       - name: Test Hidesey
-        run: dotnet test Marsey.Tests/Marsey.Tests.csproj -v n
+        run: dotnet test Marsey.Tests/Marsey.Tests.csproj -v n