Drop bad assert

mTracks is a `std::vector`, so you cannot check it against nullptr.

Author: ktf

Detectors/ITSMFT/ITS/tracking/src/Tracker.cxx

@@ -39,7 +39,6 @@ Tracker::Tracker(o2::its::TrackerTraits* traits)
   /// Initialise standard configuration with 1 iteration
   mTrkParams.resize(1);
   mMemParams.resize(1);
-  assert(mTracks != nullptr);
   mTraits = traits;
   mPrimaryVertexContext = mTraits->getPrimaryVertexContext();
 #ifdef CA_DEBUG