Removing remaining uses of is_CallableSymbolicExpression

[mkoeppe]

Follow-up from #32665.

Part of #32601

CC: @DaveWitteMorris

Component: symbolics

Author: Matthias Koeppe

Branch/Commit: dad5253

Reviewer: Kwankyu Lee

Issue created by migration from https://trac.sagemath.org/ticket/34215

[mkoeppe]

Author: Matthias Koeppe

[mkoeppe]

Branch: u/mkoeppe/removing_remaining_uses_of_is_callablesymbolicexpression

[mkoeppe]

Description changed:

--- 
+++ 
@@ -1,2 +1,5 @@
-Follow-up from #32665
+Follow-up from #32665.
 
+Part of #32601
+
+

[mkoeppe]

New commits:

dad5253

src/sage/symbolic/callable.py: Deprecate is_CallableSymbolicExpression, remove remaining uses

[mkoeppe]

Commit: dad5253

[kwankyu]

Reviewer: Kwankyu Lee

[kwankyu]

comment:5

LGTM.

[mkoeppe]

comment:6

Thanks!

[vbraun]

Changed branch from u/mkoeppe/removing_remaining_uses_of_is_callablesymbolicexpression to dad5253