hpcprof/hpcprof-mpi: Sanitize normalization passes, phase III.
hpcprof/hpcprof-mpi: Sanitize normalization passes, phase III.

- Reenable [Analysis::CallPath::]pruneTrivialNodes().
- Cleanup within Analysis::CallPath.


zcth428/hpctoolkit,zcth428/hpctoolkit111,zcth428/hpctoolkit111,zcth428/hpctoolkit,zcth428/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,zcth428/hpctoolkit111,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,HPCToolkit/hpctoolkit,zcth428/hpctoolkit,zcth428/hpctoolkit111,zcth428/hpctoolkit,zcth428/hpctoolkit111