ICameraServiceDefault is not available

<IfaceName>Default class was automatically generated, but a change in
the AIDL compiler is scheduled to generate the class only when the aidl
file is compiled with `-version` option, because the default class is
only useful for the versioned AIDL case.

Stop using ICameraServiceDefault since it will be removed. Instead use
ICameraService class instead.

Test: build
Change-Id: Ifa06e5580f62878d498d9773c81da910ee84acd1