YAQL version updated to 0.2.3

YAQL 0.2.3 contains one small change that would allow to
forbid usage of uninitialized local variables

Also removed YAQL function binding that is available in
YAQL 0.2.3 out of the box

Change-Id: I96f455e50add8666c4e65eb421bea5af57055485
Merge "YAQL version updated to 0.2.3"