From: Heiko Carstens <heiko.carstens@de.ibm.com>

Remove the disputed hba api event callback code.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>