staging: rtl8712: remove a blank line

A duplicate blank line is removed so that only a single blank line
separates two functions. Identified by checkpatch.

Signed-off-by: Deborah Brouwer <deborahbrouwer3563@gmail.com>
Link: https://lore.kernel.org/r/81801604460c8cad8770cb2e1290e1587bf88075.1617674639.git.deborahbrouwer3563@gmail.com


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