Revert broken tau fixes (71x)

Reverts recent sets of changes to Tauola++ interface which caused undecayed taus in rare cases and therefore crashes in the validation sequence.

This reverts pull requests:
https://github.com/cms-sw/cmssw/pull/4835 
https://github.com/cms-sw/cmssw/pull/4933

(The equivalent reverts for 72x are in https://github.com/cms-sw/cmssw/pull/4986)