theme: Delete max that seems not right.
It prevents popup edje resize.
So not we cant see slider indicator.
before that edje calc in render time.
But now we dont calc for no size edje.
Limit max 0 0 is really looks weird.
Test Plan: elementary_test->slider ->check indicator.
Reviewers: eagleeye, Hermet, cedric, smohanty, Jaehyun_Cho
Reviewed By: Hermet
Maniphest Tasks: T8483
Differential Revision: https://phab.enlightenment.org/D10721