Revert "exfat: AIO Optimization compatibility fixup"

This reverts commit e22999b4ceb63864efed01af63b863cb1c2c7c88.

Signed-off-by: Chester Kener <Cl3Kener@gmail.com>

Conflicts:
	fs/Kconfig
Revert "exFAT support"

This reverts commit e3c036492344575b084df1ce603138dd3fd315c8.