[Passpoint] Remove R2 broadcasts

Remove R2 broadcasts for Icon, deauth imminent and subscription
remediation. These broadcasts are not used and not necessary,
and also leaked the Passpoint AP BSSID without location
permission.

Bug: 157748906
Test: atest PasspointManagerTest
Change-Id: I25aba4c7a39150e9df483890f575d3e3767723be
(cherry picked from commit 6f1aafe2d4b979cf64ab7a5150a021f977cfed37)
Merged-In: I25aba4c7a39150e9df483890f575d3e3767723be
(cherry picked from commit d1b35627abfe888e0a250206322bd9b8b76aeb52)
2 files changed