[PyTorch] Remove unnecessary dispatcher.h include in mobile/interpreter.h (#50316)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/50316
It's unused.
ghstack-source-id: 119798799
Test Plan: CI
Reviewed By: iseeyuan
Differential Revision: D25858961
fbshipit-source-id: 0f214f93dcdf99d0c22e6d8032ed7a10604c714a
