Remove thread from the threads list when it finishes, remove debug code

Ryujinx.Core/OsHle/Kernel/SvcThreadSync.cs

@@ -43,8 +43,6 @@ namespace Ryujinx.Core.OsHle.Kernel
 
             KThread OwnerThread = Process.HandleTable.GetData<KThread>(OwnerThreadHandle);
 
-            Ns.Log.PrintDebug(LogClass.KernelSvc, "lock tid: " + OwnerThread.ThreadId.ToString());
-
             if (OwnerThread == null)
             {
                 Ns.Log.PrintWarning(LogClass.KernelSvc, $"Invalid owner thread handle 0x{OwnerThreadHandle:x8}!");

Ryujinx.Core/OsHle/Process.cs

@@ -345,7 +345,7 @@ namespace Ryujinx.Core.OsHle
             {
                 TlsSlots.TryRemove(GetTlsSlot(Thread.ThreadState.Tpidr), out _);
 
-                KThread KernelThread = GetThread(Thread.ThreadState.Tpidr);
+                Threads.TryRemove(Thread.ThreadState.Tpidr, out KThread KernelThread);
 
                 Scheduler.RemoveThread(KernelThread);