Remove unnecessary uses of SR and symbolic functions in sage.categories, sage.coding

[mkoeppe]

git grep -E '[.](symbolic|calculus|functions).*import' src/sage/coding reveals a number of calls to the symbolic calculus subsystem of Sage that can be avoided, similar to what is done in #32411

CC: @dimpase @fchapoton @tscrim

Component: refactoring

Author: Frédéric Chapoton

Branch/Commit: f96c696

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/32413

[fchapoton]

comment:1

some work done

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New commits:

d0d7166

some changes in imports in categories and coding, about binomial, floor etc

[fchapoton]

Branch: public/ticket/32413

[fchapoton]

Commit: d0d7166

[sagetrac-git]

Changed commit from d0d7166 to f96c696

[sagetrac-git]

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

f96c696

fix back import in grs_code

[fchapoton]

comment:4

green bot now. Maybe there would be more things to remove

[mkoeppe]

Author: Frédéric Chapoton

[mkoeppe]

Reviewer: Matthias Koeppe

[mkoeppe]

comment:6

LGTM. More can be done in follow-up tickets

[vbraun]

Changed branch from public/ticket/32413 to f96c696