diff --git a/L1Trigger/TrackFindingTMTT/interface/KF4ParamsCombIV.bak b/L1Trigger/TrackFindingTMTT/interface/KF4ParamsCombIV.bak
deleted file mode 100644
index 08a2d71785bdc..0000000000000
--- a/L1Trigger/TrackFindingTMTT/interface/KF4ParamsCombIV.bak
+++ /dev/null
@@ -1,50 +0,0 @@
-///=== This is the Kalman Combinatorial Filter for 4 helix parameters track fit algorithm.
- 
-///=== Written by: Sioni Summers
- 
-#ifndef __KF4PARAMSCOMBIV__
-#define __KF4PARAMSCOMBIV__
- 
-#include "L1Trigger/TrackFindingTMTT/interface/L1KalmanComb.h"
-//#include "L1Trigger/TrackFindingTMTT/interface/Matrix.h"
-#include <TMatrixD.h>
-#include "L1Trigger/TrackFindingTMTT/interface/Stub.h"
-#include "L1Trigger/TrackFindingTMTT/interface/L1track3D.h"
-
-class KF4ParamsCombIV : public L1KalmanComb{
- 
-    public:
-	enum BARREL_PAR_IDS { BP_RHOPHI, BP_Z, BP_INV2R, BP_T }; 
-	enum ENDCAP_PAR_IDS { EP_RHOPHI, EP_RHO, EP_INV2RT, EP_INVT }; 
-	enum BARREL_MEAS_IDS { BM_RHOPHI, BM_Z };
-	enum ENDCAP_MEAS_IDS { EM_RHOPHI, EM_RHO };
-    public:
-        KF4ParamsCombIV(const Settings* settings, const string &fitterName );
-        virtual ~KF4ParamsCombIV(){}
-        std::string getParams();
- 
-    protected:
-	virtual std::map<std::string, double> getTrackParams(const KalmanState *state )const;
-	virtual std::vector<double> seedx(const L1track3D& l1track3D)const;
-	virtual TMatrixD seedP(const L1track3D& l1track3D)const;
-	virtual std::vector<double> d(const StubCluster* stubCluster )const;
-	virtual TMatrixD H(const StubCluster* stubCluster)const;
-	virtual TMatrixD F(const StubCluster* stubCluster, const KalmanState *state )const;
-	virtual TMatrixD PxxModel( const KalmanState *state, const StubCluster *stubCluster, unsigned stub_itr )const; 
-	virtual TMatrixD PddMeas(const StubCluster* stubCluster, const KalmanState *state )const;
-	virtual void barrelToEndcap( double r, const StubCluster* stubCluster, std::vector<double> &state, TMatrixD &cov_x )const;
-	virtual bool stubBelongs(const StubCluster* stubCluster, KalmanState& state, unsigned itr )const;
-	virtual double validationGateCutValue( const StubCluster *stubCluster, unsigned path )const;
-	virtual bool isGoodState( const KalmanState &state )const;
-	virtual std::vector<double> residual(const StubCluster* stubCluster, const std::vector<double> &x )const;
-
-    private:
-	double getZ( const KalmanState *state )const;
-	double getZ0( const KalmanState *state )const;
-	double getZ0Variance( const KalmanState *state )const;
-	double getZVariance( const KalmanState *state )const;
-	void   barrelToEndcap( double r, const StubCluster *stubCluster, std::vector<double> &state )const;
-};
-#endif
-
-