Remove some redundant CI & config

Author: gunndabad

.config/dotnet-tools.json

@@ -40,15 +40,6 @@ jobs:
         dotnet-version: |
           8.0.x
 
-    - name: Install tools
-      run: |
-        dotnet tool restore --add-source https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet7/nuget/v3/index.json
-
-    - name: Clean
-      run: |
-        dotnet clean --configuration Release
-        dotnet nuget locals all --clear
-
     - name: Restore
       run: dotnet restore