CreateLogFile_fCreateDispositionFlags should be removed in favor of FILE_CREATE_FLAGS

[AArnott]

This is causing a CsWin32 test to be unstable. Today, both of these enums exist. Can we remove the second one?

public enum FILE_CREATE_FLAGS : uint
{
	CREATE_NEW = 1u,
	CREATE_ALWAYS,
	OPEN_EXISTING,
	OPEN_ALWAYS,
	TRUNCATE_EXISTING
}

public enum CreateLogFile_fCreateDispositionFlags : uint
{
	CREATE_NEW = 1u,
	OPEN_EXISTING = 3u,
	OPEN_ALWAYS = 4u,
	CREATE_ALWAYS = 2u,
	TRUNCATE_EXISTING = 5u
}