[JIT] Remove import statement thing in serialization docs (#38578)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/38578
Test Plan: Imported from OSS
Differential Revision: D21603383
Pulled By: jamesr66a
fbshipit-source-id: 07c7eb62f048406f2e21528e32c677d18eb87cce
