Delete old 16KB page workarounds (#6584)

* Delete old 16KB page workarounds

* Rename Supports4KBPage to UsesPrivateAllocations

* Format whitespace

* This one should be false too

* Update XML doc

src/Ryujinx.Cpu/Jit/MemoryManager.cs

@@ -25,7 +25,7 @@ namespace Ryujinx.Cpu.Jit
         private readonly InvalidAccessHandler _invalidAccessHandler;
 
         /// <inheritdoc/>
-        public bool Supports4KBPages => true;
+        public bool UsesPrivateAllocations => false;
 
         /// <summary>
         /// Address space width in bits.