[DEV] enable the build with iOS SDK 9
[DEV] enable the build with iOS SDK 9

Removed unused and outdated methods
Methods
- centralManager:didRetrieveConnectedPeripherals:
- centralManager:didRetrievePeripherals:
are removed from the SDK 9 API

Change-Id: I71f44d60c9562fc3cb016f0d8eb6b397a6873606
Reviewed-on: https://gerrit.parrot.biz/22850
Reviewed-by: Nicolas Brulez <c7b4d7ddc34318e865922d5ddc9ce680dfb1b14c@parrot.com>
Reviewed-by: David Flattin <ccf5082fbfcc4a33363d904ac4f1da195231c761@parrot.com>

Parrot-Developers/libARSAL,Parrot-Developers/libARSAL,Parrot-Developers/libARSAL