Remove variable now in fciqmc_data from 'use semi_stoch' statement.
Remove variable now in fciqmc_data from 'use semi_stoch' statement.

This is not quite correct any more and caused intel to throw
a compilation error.

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