Fix bug of moving cursor handler

Fix bug of moving cursor handler

Summary:
In elm entry, cursor handlers are placed and moved incorrectly if we do selection from bottom to top.
Ex: In elementary_test -> Entry -> Right click -> choose Select -> do selection from bottom to top (or press Shift + <- keys to do selection).
Look at selection handlers: they are incorrectly placed.
Try to move selection handlers: They suddenly move to near each other.

Minor: Remove unused variable.

@fix

Reviewers: seoz

Differential Revision: https://phab.enlightenment.org/D583