remove setting ec->parent before evaluation.
remove setting ec->parent before evaluation.

Summary:
the value of "ec->parent" should be set in evaluation time,
therefore ec->parent->transients will be reset automatically.

Reviewers: devilhorns

CC: cedric

Differential Revision: https://phab.enlightenment.org/D1155

tizenorg/platform.upstream.enlightenment,FlorentRevest/Enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,tasn/enlightenment,FlorentRevest/Enlightenment,tasn/enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,rvandegrift/e,tizenorg/platform.upstream.enlightenment,tasn/enlightenment