Clear alias name when device unbond

Clear alias name when device is unpaired to prevent settings app get old
alias name when scan new device.

Bug: 135944797
Test: manual
Change-Id: I8d1a50e0823f9ce312f203859e906fcece838db1
Merged-In: I8d1a50e0823f9ce312f203859e906fcece838db1
1 file changed