Revert "Add validation for mapper function in datapipes with `input_col` (#79344)"
This reverts commit 787ac4edf8d774f2f26378e1da8e620995555b7d.
Reverted https://github.com/pytorch/pytorch/pull/79344 on behalf of https://github.com/ejguan due to This PR breaks multiple use cases and the CI from TorchVision becomes red
