diff --git a/TrackingTools/GsfTools/interface/KeepingNonZeroWeightsMerger.h b/TrackingTools/GsfTools/interface/KeepingNonZeroWeightsMerger.h
deleted file mode 100644
index aff43e0427262..0000000000000
--- a/TrackingTools/GsfTools/interface/KeepingNonZeroWeightsMerger.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#ifndef KeepingNonZeroWeightsMerger_H
-#define KeepingNonZeroWeightsMerger_H
-
-#include "TrackingTools/GsfTools/interface/MultiGaussianStateMerger.h"
-
-/** Merging of a Gaussian mixture by keeping
- *  the components with weights larger than a cut value.
- */
-
-class  KeepingNonZeroWeightsMerger : public MultiGaussianStateMerger {
-
- public:
-
-  KeepingNonZeroWeightsMerger() : cut(1.e-7) {}
-  
-  KeepingNonZeroWeightsMerger(const double& value) : cut(value) {}
-
-  virtual KeepingNonZeroWeightsMerger* clone() const
-  {  
-    return new KeepingNonZeroWeightsMerger(*this);
-  }
-  
-  /** Method which does the actual merging. Returns a trimmed MultiGaussianState
-   */
-
-  virtual RCMultiGaussianState merge(const RCMultiGaussianState& mgs) const;
-
- private:
-  
-  double cut;
-
-};  
-
-#endif // KeepingNonZeroWeightsMerger_H
diff --git a/TrackingTools/GsfTools/interface/LargestWeightsStateMerger.h b/TrackingTools/GsfTools/interface/LargestWeightsStateMerger.h
deleted file mode 100644
index f108dcf4cb78e..0000000000000
--- a/TrackingTools/GsfTools/interface/LargestWeightsStateMerger.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#ifndef LargestWeightsStateMerger_H
-#define LargestWeightsStateMerger_H
-
-#include "TrackingTools/GsfTools/interface/MultiGaussianStateMerger.h"
-
-/** Merging of a Gaussian mixture by keeping
- *  the number Nmax components with the largest weights.
- */
-
-class LargestWeightsStateMerger : public MultiGaussianStateMerger {
-
- public:
-
-  LargestWeightsStateMerger(int n) : Nmax(n), theSmallestWeightsMerging(true) {
-//     initConfigurables();
-  }
-
-  virtual LargestWeightsStateMerger* clone() const
-  {  
-    return new LargestWeightsStateMerger(*this);
-  }
-  
-  /** Method which does the actual merging. Returns a trimmed MultiGaussianState.
-   */
-
-  virtual RCMultiGaussianState merge(const RCMultiGaussianState& mgs) const;
-  
- private:
-
-//   void initConfigurables();
-  
-  int Nmax;
-  bool theSmallestWeightsMerging;
-
-};  
-
-#endif
diff --git a/TrackingTools/GsfTools/interface/MahalanobisDistance.h b/TrackingTools/GsfTools/interface/MahalanobisDistance.h
deleted file mode 100644
index fce313b993b06..0000000000000
--- a/TrackingTools/GsfTools/interface/MahalanobisDistance.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#ifndef MahalanobisDistance_H
-#define MahalanobisDistance_H
-
-#include "TrackingTools/GsfTools/interface/DistanceBetweenComponents.h"
-
-class TrajectoryStateOnSurface;
-
-/** Calculation of Mahalanobis distance between two Gaussian components.
- */
-
-class MahalanobisDistance : public DistanceBetweenComponents {
-
- public:
-
-  /** Method which calculates the actual Mahalanobis distance.
-   */
-
-  virtual double operator() (const RCSingleGaussianState&, 
-			     const RCSingleGaussianState&) const;
-
-  virtual MahalanobisDistance* clone() const
-  {  
-    return new MahalanobisDistance(*this);
-  }
-  
-};  
-
-#endif // MahalanobisDistance_H
diff --git a/TrackingTools/GsfTools/interface/RCMultiGaussianState.h b/TrackingTools/GsfTools/interface/RCMultiGaussianState.h
deleted file mode 100644
index 89c1fd39fdec2..0000000000000
--- a/TrackingTools/GsfTools/interface/RCMultiGaussianState.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef RefCountedMultiGaussianState_H
-#define RefCountedMultiGaussianState_H
-
-#include "DataFormats/GeometrySurface/interface/ReferenceCounted.h"
-#include "TrackingTools/GsfTools/interface/MultiGaussianState.h"
-
-typedef ReferenceCountingPointer<MultiGaussianState> RCMultiGaussianState;
-
-#endif
diff --git a/TrackingTools/MeasurementDet/interface/GeometricSearchDetMeasurements.h b/TrackingTools/MeasurementDet/interface/GeometricSearchDetMeasurements.h
deleted file mode 100644
index 5c68b1c52619c..0000000000000
--- a/TrackingTools/MeasurementDet/interface/GeometricSearchDetMeasurements.h
+++ /dev/null
@@ -1 +0,0 @@
-#error "removed"
diff --git a/TrackingTools/TrajectoryFiltering/interface/BaseCkfTrajectoryFilter.h b/TrackingTools/TrajectoryFiltering/interface/BaseCkfTrajectoryFilter.h
deleted file mode 100644
index 50aed6f82f867..0000000000000
--- a/TrackingTools/TrajectoryFiltering/interface/BaseCkfTrajectoryFilter.h
+++ /dev/null
@@ -1 +0,0 @@
-#error class removed