Ensure no management api for v12 (#14197)

* Remove management api

* Remove actual files

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/AppCacheTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
 using System.Linq;
 using NUnit.Framework;
 using Umbraco.Cms.Core.Cache;

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/DeepCloneAppCacheTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
 using System.Diagnostics;
 using System.Linq;
 using NUnit.Framework;

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/DefaultCachePolicyTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
 using System.Collections.Generic;
 using Moq;
 using NUnit.Framework;

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/FullDataSetCachePolicyTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Linq;

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/RefresherTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
 using Newtonsoft.Json;
 using NUnit.Framework;
 using Umbraco.Cms.Core.Cache;

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/RuntimeAppCacheTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
 using System.Threading;
 using NUnit.Framework;
 using Umbraco.Cms.Core.Cache;

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/SingleItemsOnlyCachePolicyTests.cs

@@ -1,7 +1,6 @@
 // Copyright (c) Umbraco.
 // See LICENSE for more details.
 
-using System;
 using System.Collections.Generic;
 using Moq;
 using NUnit.Framework;

tests/Umbraco.Tests.UnitTests/Umbraco.Core/Cache/ValueEditorCacheTests.cs

@@ -1,4 +1,3 @@
-using System;
 using System.Collections.Generic;
 using Moq;
 using NUnit.Framework;