staging: r8188eu: cur_ant is set but never used

In rtw_select_and_join_from_scanned_queue() the local variable cur_ant
is set but never used. Remove the variable and related dead code.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220405104910.9769-2-straube.linux@gmail.com


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