iOS Advertising Identifier Rejection

Hi, I am using Unity3D 4.6.4f1 and there is not external or 3rd party plugin in my project. But when I use

grep -r advertisingIdentifier .

I got this: ./Classes/Unity/DeviceSettings.mm:&&[retClass instancesRespondToSelector: @selector(advertisingIdentifier)]

./Classes/Unity/DeviceSettings.mm:_ADID = (NSString*)[[[manager performSelector: @selector(advertisingIdentifier)] UUIDString] retain];

Binary file ./Libraries/libiPhone-lib.a matches

I have removed references from DeviceSettings.mm, but don't know how to remove

Binary file ./Libraries/libiPhone-lib.a matches