fix lint warning (#295)

Summary:
Pull Request resolved: https://github.com/pytorch/executorch/pull/295

the function is too complext and lint runner shows warning. Suppress it for now and will refactor later

Reviewed By: huydhn

Differential Revision: D49213042

fbshipit-source-id: 39d0261224542ec0b13e34e1379d7269d5206aaa