typo
Remove TYPELOOKUP_DATA_REG(SeedingLayerSetsBuilder) as obsolete

I forgot (or actually didn't know) to remove this when the
SeedingLayerSetsBuilderESProducer was removed.
Merge pull request #2905 from felicepantaleo/TrackClusterSplitterTypo

Reco fixes -- Porting error
Merge pull request #2919 from makortel/seedingLayersFix

Reco fixes -- Remove TYPELOOKUP_DATA_REG(SeedingLayerSetsBuilder)
Merge remote branch 'origin/CMSSW_7_1_X' into CMSSW_7_0_X