Removed the dead code in mtip_hw_read_registers() and mtip_hw_read_flags().

Reported-by: Coverity
Signed-off-by: NAsai Thambi S P <asamymuthupa@micron.com>
Signed-off-by: NSelvan Mani <smani@micron.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>