diff --git a/libraries/AP_SpdHgtControl/AP_SpdHgtControl.h b/libraries/AP_SpdHgtControl/AP_SpdHgtControl.h
deleted file mode 100644
index 249bf6dabe..0000000000
--- a/libraries/AP_SpdHgtControl/AP_SpdHgtControl.h
+++ /dev/null
@@ -1,85 +0,0 @@
-#pragma once
-
-/// @file    AP_SpdHgtControl.h
-/// @brief   generic speed & height controller interface
-
-/*
-  This defines a generic interface for speed & height controllers. Each
-  specific controller should be a subclass of this generic
-  interface. All variables used by controllers should be in their
-  own class.
- */
-
-#include <AP_Vehicle/AP_Vehicle.h>
-
-#include <stdint.h>
-
-class AP_SpdHgtControl {
-public:
-	// Update the internal state of the height and height rate estimator
-	// Update of the inertial speed rate estimate internal state
-	// Should be called at 50Hz or faster
-	virtual void update_50hz(void) = 0;
-
-
-	// Update of the pitch and throttle demands
-	// Should be called at 10Hz or faster
-	virtual void update_pitch_throttle( int32_t hgt_dem_cm,
-										int32_t EAS_dem_cm,
-										enum AP_Vehicle::FixedWing::FlightStage flight_stage,
-                                        float distance_beyond_land_wp,
-										int32_t ptchMinCO_cd,
-										int16_t throttle_nudge,
-                                        float hgt_afe,
-										float load_factor) = 0;
-
-	// demanded throttle in percentage
-	// should return 0 to 100
-	virtual float get_throttle_demand(void)=0;
-	
-	// demanded pitch angle in centi-degrees
-	// should return -9000 to +9000
-	virtual int32_t get_pitch_demand(void)=0;
-	
-	// Rate of change of velocity along X body axis in m/s^2
-    virtual float get_VXdot(void)=0;
-	
-	// return current target airspeed
-	virtual float get_target_airspeed(void) const = 0;
-
-	// return maximum climb rate
-	virtual float get_max_climbrate(void) const = 0;
-
-    // return maximum sink rate (+ve number)
-    virtual float get_max_sinkrate(void) const = 0;
-
-    // added to let SoaringController reset pitch integrator to zero
-    virtual void reset_pitch_I(void) = 0;
-    
-    // return landing sink rate
-    virtual float get_land_sinkrate(void) const = 0;
-
-    // return landing airspeed
-    virtual float get_land_airspeed(void) const = 0;
-
-	// set path_proportion accessor
-    virtual void set_path_proportion(float path_proportion) = 0;
-
-    // reset on next loop
-    virtual void reset(void) = 0;
-
-    // set gliding requested flag
-    virtual void set_gliding_requested_flag(bool gliding_requested) = 0;
-
-    // set propulsion failed flag
-    virtual void set_propulsion_failed_flag(bool propulsion_failed) = 0;
-
-	// add new controllers to this enum. Users can then
-	// select which controller to use by setting the
-	// SPDHGT_CONTROLLER parameter
-	enum ControllerType {
-		CONTROLLER_TECS     = 1
-	};
-	
-
-};