sage.{functions,interfaces,symbolic}: Replace imports from sage.*.all for namespace packages #34954
Description
Using ./sage -fiximports from #34945.
Also remove trailing whitespace in the affected files.
Part of Meta-ticket #34201
CC: @alexchandler100 @dimpase @DaveWitteMorris
Component: refactoring
Author: Alex Chandler, Matthias Koeppe
Issue created by migration from https://trac.sagemath.org/ticket/34954