Remove useless name check for inputs (#4618)
Summary:
Pull Request resolved: https://github.com/pytorch/glow/pull/4618
`onnxInputNames_` originated from positional name binding. This is inherited from C2, where in C2 inputs are bound by position. So it's useless to check the name here as like as `onnxInputNames_` is filled. If should save cycles on string comparison.
Test Plan: run it.
Reviewed By: jackm321
Differential Revision: D22104338
fbshipit-source-id: 250463744aa37ed291aebd337e26d573048583ff
