Revert "Set WifiHAL to only log debug by default."

Recent changes have brought the log volumes for
the QCA WifiHAL down to reasonable levels. As
such, we no longer need to use a custom default
log level for WifiHAL.

This reverts commit f83213a5b5cd69dc816daa27cff6d03c4d75b5a4.

BUG=28178513
TEST=build, check log volume after >12 hours
1 file changed