Remove unused local variable in PyImport_ImportModuleLevelObject

[hyongtao-code]

Bug report

Bug description:

While learning PyImport_ImportModuleLevelObject, I noticed that the local
variable package is initialized to NULL, never assigned or used, and only
passed to Py_XDECREF at function exit.

CPython versions tested on:

CPython main branch

Operating systems tested on:

Windows

Linked PRs

• gh-142666: Remove unused variable package in import logic #142667

[hyongtao-code]

Sorry, I shouldn’t have selected the type-bug label when creating the issue; I should have used the blank template instead. Please help me remove this incorrect label.