hostapd: Don't consider rssi threshold to generate probe req event

probe request event are generated only if rssi of current and
last probe request change by an 10db threshold. But this
CL will include change to not consider 10db rssi threshold to
generate probe request event.

BUG=b:37505307
TEST=compiled successfully

Change-Id: I32a1f9edb9399f94a7c4da3bfd9e1e1184d64949
Reviewed-on: https://chromium-review.googlesource.com/483819
Commit-Ready: NARAYANRADDI MASTI <nmasti@google.com>
Tested-by: NARAYANRADDI MASTI <nmasti@google.com>
Reviewed-by: Srinivasa duvvuri <sduvvuri@chromium.org>
1 file changed