Revert D23878455: [Distributed] Adding Python tests for the TCPStore getNumKeys and deleteKey
Test Plan: revert-hammer
Differential Revision:
D23878455 (https://github.com/pytorch/pytorch/commit/cf808bed738632dba15531337ceb9fa5f148d7b4)
Original commit changeset: 0a17ecf66b28
fbshipit-source-id: 93e60b23f66324e3e5266c45abb0cec295bb3d23
