feat: remove paver update_db in depr

[Yagnesh1998]

Description:
as per original ticker #32683

We are currently trying to deprecate the paver overall. This method is currently not working in one of our environments, so the best way forward is to delete this method.

We will replace this call with a make migrate command in the Makefile to make it more consistent with other IDAs in the Open edX ecosystem.

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2U Release Notice: This PR has been deployed to the edX staging environment in preparation for a release to production.

[edx-pipeline-bot]

2U Release Notice: This PR has been deployed to the edX production environment.