[Caffe2] Don't pass vector by value in SqueezeOp (#64400)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64400
There appears to be no need to copy this vector.
ghstack-source-id: 138033020
Test Plan: CI
Reviewed By: smacke
Differential Revision: D30711014
fbshipit-source-id: b9fcf3d496a663b8478aa22d52b2c41f8f85e90f
