Cleanup of symmetric function code

[zabrocki]

Recent tickets which changed the symmetric function code (potentially #5457, #13399, #13404, #13762, but maybe others) included unnecessary import statements and lines that raise warnings with pyflakes. This ticket corrects most of these warnings plus minor cleanup of the symmetric function code.

This sort of cleanup in new_kschur.py and k_dual.py is done in #13743, #14235, #14237

Apply:

• attachment: trac_14220_symmetric_function_cleanup-mz.patch
• attachment: trac_14220_sym_clean-fc.2.patch

Depends on #13605

CC: @anneschilling @saliola @sagetrac-chrisjamesberg

Component: combinatorics

Keywords: symmetric functions, pyflakes

Author: Mike Zabrocki

Reviewer: Frédéric Chapoton

Merged: sage-5.9.beta4

Issue created by migration from https://trac.sagemath.org/ticket/14220

[zabrocki]

Changed author from zabrocki to Mike Zabrocki

[zabrocki]

comment:3

Attachment: trac_14220_symmetric_function_cleanup-mz.patch.gz

[fchapoton]

comment:5

I have added a tiny patch, trying to ensure that all tests pass in ncsf

If the bot turns green, I will give a positive review

[fchapoton]

Reviewer: Frédéric Chapoton

[fchapoton]

comment:6

positive review

[zabrocki]

comment:7

Thanks for the review and for catching the ncsf cleanup.

[jdemeyer]

comment:8

This needs to be rebased to sage-5.9.beta0.

[zabrocki]

Attachment: trac_14220_sym_clean-fc.2.patch.gz

[tscrim]

comment:10

This applied cleanly for me so I'm setting this back to positive review.

[zabrocki]

comment:11

Hi Travis. Thanks for coming back to this one.

[jdemeyer]

Merged: sage-5.9.beta4