Fix scheduling issue with pseudojets in derivations
This fixes an issue that was recently introduced into the Jet derivation framework where PseudoJetAlgorithms that are required to compute event densities would always be scheduled to the top algorithm sequence. This was a problem where users would schedule their derivation algorithms to a different sequence. This simply removes this functionality from defineEDAlg(...), as it's already implemented elsewhere in ExtendedJetCommon within user-facing functions.
This will all be completely overhauled in the near future with the new jet config system, so there's no need to make this more elegant right now.