Remove operator.h's dependency on function_schema.h (#19817)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/19817
A lot of files were depending on the JIT's typesystem
because operator.h depends on function_schema.h. However,
this isn't fundamental to the design. This diff tries to
remove the direct depenency and only includes the c10
wrapper helpers in files where it is required.
Reviewed By: smessmer
Differential Revision: D15112247
fbshipit-source-id: 2c53d83e542c32d9a398c8b60dbf40ab7a1cb0f6
