Remove unused const assignment

It seems that the const `render.DRAW_TEXT` was being assigned to a skid
and never used. This tiny commit just removes the assignment, and the
render package, which was only imported for this assignment.
Modify EndEdit to use a more descriptive var name

This also makes this function more in line with similar functions in
this file, which prefer the more descriptive `edit` over simply `e`.
Merge pull request #163 from Dparker1990/prefer_description_var_name

Modify EndEdit to use a more descriptive edit var name
Merge pull request #162 from Dparker1990/remove_unused_const_assignment

Remove unused const assignment