Revert "Structural and Memory Safety Improvements, Analyzer Cleanup (ryubing/ryujinx!47)"

This reverts merge request !47

src/Ryujinx.Tests/Memory/MockMemoryManager.cs

@@ -11,7 +11,9 @@ namespace Ryujinx.Tests.Memory
 
         public MemoryManagerType Type => MemoryManagerType.HostMappedUnsafe;
 
+#pragma warning disable CS0067 // The event is never used
         public event Action<ulong, ulong> UnmapEvent;
+#pragma warning restore CS0067
 
         public ref T GetRef<T>(ulong va) where T : unmanaged
         {
@@ -47,12 +49,5 @@ namespace Ryujinx.Tests.Memory
         {
             throw new NotImplementedException();
         }
-
-        // Since the mock never unmaps memory, the UnmapEvent is never used and this causes a warning.
-        // This method is provided to allow the mock to trigger the event if needed.
-        public void Unmap(ulong va, ulong size)
-        {
-            UnmapEvent?.Invoke(va, size);
-        }
     }
 }

src/Ryujinx.Tests/Memory/PartialUnmaps.cs

@@ -11,6 +11,7 @@ using Ryujinx.Memory;
 using Ryujinx.Memory.Tracking;
 using System;
 using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using System.Runtime.Versioning;