sage

376adca4 -

gh-41307: remove method simon_two_descent as this was deprecated in #35621 plus fixing a few minor details ### :memo: Checklist - [x] The title is concise and informative. - [x] The description explains in detail what this PR is about. - [x] I have linked a relevant issue or discussion. URL: https://github.com/sagemath/sage/pull/41307 Reported by: Frédéric Chapoton Reviewer(s): Chenxin Zhong