revert a few temporary changes

4 jobs for line_search in 7 minutes and 26 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #221604
test_min

00:03:46

passed #221605
test_mpi

00:05:28

passed #221606
test_mpi_fftw

00:05:54

passed #221607
test_mpi_fftw_hdf5

00:07:23

65.0%