Remove errant test file.
Remove errant test file.

halfflat/arbor,halfflat/nestmc-proto,eth-cscs/nestmc-proto,halfflat/arbor,eth-cscs/nestmc-proto,halfflat/arbor,halfflat/arbor,halfflat/arbor,eth-cscs/nestmc-proto,halfflat/nestmc-proto,halfflat/nestmc-proto