.circleci: Remove migrated CUDA 10.2 build (#68782)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68782
These builds are no longer required for slow_gradcheck and should be
removed
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: malfet, janeyx99
Differential Revision: D32606679
Pulled By: seemethere
fbshipit-source-id: e4827a6f217b91c34cfab6c2340e3272f3db1522
