CI: revert the warning change once IPython updates

[charlesdong1991]

A couple days ago, there was a CI broken caused by the latest jedi release, and back then, made a patch to catch the warning. Ideally, after ipython updates and fixes the deprecated code, then the warning should be removed, and we should be able to revert the change in #31323

FYI, I created an issue on IPython: ipython/ipython#12102

[jbrockmendel]

@charlesdong1991 how will we know when this is ready to address?

[charlesdong1991]

@jbrockmendel

i think we can already address this, I just checked the issue ipython/ipython#12102 and seems it has been solved and the new release of ipython came out a couple weeks ago.

Pls let me revert the original PR and see if anything breaks.

[jbrockmendel]

@charlesdong1991 some tab completion tests are failing, is that related to this?

[mroeschke]

Looks like the warning code has been reverted on master for quite some time since 2021-02-02, so appears safe to close.