Remove GetDefaultPageSize

Duplicate. We already have the API for this: `Platform::GetCPUInfo().PageSize`.

Source/Engine/Platform/Unix/UnixPlatform.cpp

@@ -51,11 +51,6 @@ void UnixPlatform::Free(void* ptr)
     }
 }
 
-uint64 Win32Platform::GetDefaultPageSize()
-{
-    return 16;
-}
-
 void* Win32Platform::AllocatePages(uint64 numPages, uint64 pageSize)
 {
     const uint64 numBytes = numPages * pageSize;

Source/Engine/Platform/Unix/UnixPlatform.h

@@ -16,7 +16,6 @@ public:
     // [PlatformBase]
     static void* Allocate(uint64 size, uint64 alignment);
     static void Free(void* ptr);
-    static uint64 GetDefaultPageSize();
     static void* AllocatePages(uint64 numPages, uint64 pageSize);
     static void FreePages(void* ptr);
     static uint64 GetCurrentProcessId();