libhardware: Sync ICS_AUDIO_BLOB #ifdefs with CM 10.1

Remove a #ifndef ICS_AUDIO_BLOB directive that was not there in CM 10.1.
Fixes an AudioFlinger compilation error where get_next_write_timestamp can't
be found if ICS_AUDIO_BLOB is defined.

Change-Id: Ib7f7f5bf5cb079a5a230d3b45f113ae5aec3cd31

Conflicts:
	include/hardware/audio.h

	modified:   include/hardware/audio.h