remove C10_MOBILE from LegacyTypeDispatch.cpp (#19758)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19758
ghimport-source-id: 59d0d337260e3baf57da87af3f97836b321a3db2
Reviewed By: pjh5
Differential Revision: D15087654
Pulled By: ljk53
fbshipit-source-id: 8f56808faba35bae68ee99c62c761f94807b6fd7
