Remove some test output files.
Remove some test output files.

These are stored in benchfiles anyway and are overwritten each test.
This is very annoying as different compilers introduce different amounts
of whitespace so git is continually complaining about irrelevant file
changes.

hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,hande-qmc/hande,ruthfranklin/hande