Fix obsolete comment for checkAndStartWifi()

This comment was referring to code that was removed by
http://ag/9168597.  Encrypted devices are no longer handled specially.
Also, this only ever applied to Full Disk Encryption, which Android no
longer supports since it was replaced by File Based Encryption.

Bug: 208476087
Test: N/A
Change-Id: If7b03d6a6de40530e29a36665dbba9a2f0d5fe02
1 file changed