Move tensor implicit conversions to test_builtins.py (#55532)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/55532
Test Plan: Imported from OSS
Reviewed By: mruberry
Differential Revision: D27729682
Pulled By: nikithamalgifb
fbshipit-source-id: d2517ee68b83e59cde87b8fb7d5bf7203f02cbc6
