[iOS][CoreML] Remove shape information from TensorSpec (#67412)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67412
For inputs, we'll be using the shape from PyTorch tensors. For outputs, we'll be using the shape from MLMultiArray. Thus, we can decouple from the symbolic shapes defined in the compile spec.
ghstack-source-id: 141746346
Test Plan:
- Sandcastle
- buck test pp-ios
Reviewed By: hanton
Differential Revision: D31299408
fbshipit-source-id: 337d5bb9efc2ff51409586c288d607399b937212
