remove atty - #1180

control: job dependencies complete; ready to run (waiting for 11 m 11 s)
control: job assigned to worker 01KY5E4H127C1CH21W80QG0GCS [factory edgar, gimlet/BRM42220010/1306] (queued for 34 m 3 s)
...
task: starting task 0: "setup"
task: process exited: duration 4127 ms, exit code 0
...
task: starting task 1: "authentication"
task: process exited: duration 70 ms, exit code 0
...
task: starting task 2: "build"
...
| test vsock::poller::test::end_to_end_large_data ... ok
| test vsock::poller::test::host_socket_eof_sends_shutdown ... ok
| test hw::pci::propolis_types_pcipath_is_always_valid_bdf ... ok
| 
| test result: ok. 193 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in  [...]
| 
| 
| real        3.910203162
| user        4.857951685
| sys         5.137061454
| trap        0.081575166
| tflt        0.009490956
| dflt        0.007732173
| kflt        0.000038823
| lock     1:25.435290019
| slp         7.746430267
| lat         0.289819009
| stop        7.591009661
task: process exited: duration 16549 ms, exit code 0
|W| found 0 output files