staging: sm750fb: Remove unnecessary blank line

Remove unnecessary extra blank line to improve readability.
Reported by checkpatch.

Signed-off-by: Zhansaya Bagdauletkyzy <zhansayabagdaulet@gmail.com>
Link: https://lore.kernel.org/r/20210404111055.GA22626@zhans


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>