Don't use NotFoundError in _func_call_and_param_index
Don't use NotFoundError in _func_call_and_param_index

This makes it simpler.

mfussenegger/jedi,tjwei/jedi,WoLpH/jedi,jonashaag/jedi,dwillmer/jedi,tjwei/jedi,dwillmer/jedi,flurischt/jedi,flurischt/jedi,jonashaag/jedi,mfussenegger/jedi,WoLpH/jedi