removed mrt3 from test cases

6 jobs for remove_mrt3 in 15 minutes and 3 seconds (queued for 24 seconds)
Status Job ID Name Coverage
  Test
passed #399145
cuda docker
build-documentation

00:01:02

passed #399144
cuda docker
flake8-lint

00:00:20

passed #399143
docker
minimal-conda

00:01:02

passed #399141
win
minimal-windows

00:02:59

passed #399140
AVX cuda docker
tests-and-coverage

00:06:38

passed #399142
cuda docker
ubuntu

00:14:46