Replace imports from sage.*.all by more specific imports in combinat

[fchapoton]

as it breaks the linter..

Depends on #32989
Depends on #32999
Depends on #33007

CC: @mkoeppe

Component: combinatorics

Author: Frédéric Chapoton

Branch/Commit: 9018e5c

Reviewer: Matthias Koeppe

Issue created by migration from https://trac.sagemath.org/ticket/33146

[fchapoton]

Commit: 4d5be9a

[fchapoton]

New commits:

9b329d5	some more specific imports in combinat
4d5be9a	a few more precise imports in combinat

[fchapoton]

Branch: u/chapoton/33146

[fchapoton]

Description changed:

--- 
+++ 
@@ -1 +1 @@
-
+as it breaks the linter..

[mkoeppe]

Dependencies: #32989, #32999, #33007

[mkoeppe]

comment:2

Conflicts with #32999

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. This was a forced push. New commits:

[sagetrac-git]

Changed commit from 4d5be9a to 9b329d5