staging: rtl8187se: Delete commented code

Delete all commented code in ieee80211/ieee80211_softmac.c
that are not necessary.

Also, remove the unused variable referenced in the commented code.
Signed-off-by: Ana Rey <anarey@gmail.com>
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>