sage.{functions,interfaces,symbolic}: Replace imports from sage.*.all for namespace packages

[mkoeppe]

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

[mkoeppe]

Branch: u/mkoeppe/sage__functions_interfaces_symbolic___replace_imports_from_sage___all_for_namespace_packages

[mkoeppe]

Commit: 21148e5

[mkoeppe]

New commits:

21148e5

sage -fiximports src/sage/{functions,interfaces,symbolic}

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

2870ffb	src/sage/interfaces/sage0.py: Hide a legitimate .all import from relint
70e5c66	sage.{functions,interfaces,symbolic}: Consolidate imports from the same module
7305a7c	git grep -l -E ' (Q as QQ|Z as ZZ)' | xargs sed -i.bak 's/ Q as QQ/ QQ/;s/ Z as ZZ/ ZZ/;'

[sagetrac-git]

Changed commit from 21148e5 to 7305a7c

[mkoeppe]

Changed author from Alex Chandler to Alex Chandler, Matthias Koeppe

[mkoeppe]

This was successfully tested (before the migration) in /~https://github.com/sagemath/sagetrac-mirror/actions/runs/4038909985