Suppress warnings from fields never used or never assigned (CS0169 and CS0649) (#919)

* chore : disable unwanted warnings and minor code cleanup

* chore : remove more warnings

* fix : reorder struct correctly

* fix : restore _isKernel and remove useless comment

* fix : copy/paste error

* fix : restore CallMethod call

* fix : whitespace

* chore : clean using

* feat : remove warnings

* fix : simplify warning removal on struct

* fix : revert fields deletion and code clean up

* fix : re-add RE value

* fix : typo

Ryujinx.HLE/HOS/Kernel/Ipc/KLightSession.cs

@@ -7,14 +7,10 @@ namespace Ryujinx.HLE.HOS.Kernel.Ipc
         public KLightServerSession ServerSession { get; }
         public KLightClientSession ClientSession { get; }
 
-        private bool _hasBeenInitialized;
-
         public KLightSession(Horizon system) : base(system)
         {
             ServerSession = new KLightServerSession(system, this);
             ClientSession = new KLightClientSession(system, this);
-
-            _hasBeenInitialized = true;
         }
     }
 }

Ryujinx.HLE/HOS/Kernel/Memory/KMemoryManager.cs

@@ -64,6 +64,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
         public int AddrSpaceWidth { get; private set; }
 
         private bool _isKernel;
+
         private bool _aslrEnabled;
 
         private KMemoryBlockAllocator _blockAllocator;
@@ -78,6 +79,8 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory
             _cpuMemory = cpuMemory;
 
             _blocks = new LinkedList<KMemoryBlock>();
+
+            _isKernel = false;
         }
 
         private static readonly int[] AddrSpaceSizes = new int[] { 32, 36, 32, 39 };

Ryujinx.HLE/HOS/Kernel/Threading/KThread.cs

@@ -66,7 +66,9 @@ namespace Ryujinx.HLE.HOS.Kernel.Threading
 
         private long _affinityMaskOverride;
         private int  _preferredCoreOverride;
+#pragma warning disable CS0649
         private int  _affinityOverrideCount;
+#pragma warning restore CS0649
 
         public ThreadSchedState SchedFlags { get; private set; }