diff --git a/src/BulletDynamics/ConstraintSolver/btsolverbody.h b/src/BulletDynamics/ConstraintSolver/btsolverbody.h
deleted file mode 100644
index 6c8ddf1ca..000000000
--- a/src/BulletDynamics/ConstraintSolver/btsolverbody.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
-Bullet Continuous Collision Detection and Physics Library
-Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
-
-This software is provided 'as-is', without any express or implied warranty.
-In no event will the authors be held liable for any damages arising from the use of this software.
-Permission is granted to anyone to use this software for any purpose, 
-including commercial applications, and to alter it and redistribute it freely, 
-subject to the following restrictions:
-
-1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
-2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
-3. This notice may not be removed or altered from any source distribution.
-*/
-
-#ifndef BT_SOLVER_BODY_H
-#define BT_SOLVER_BODY_H
-
-class	btRigidBody;
-#include "LinearMath/btVector3.h"
-#include "LinearMath/btMatrix3x3.h"
-
-
-
-
-ATTRIBUTE_ALIGNED16 (struct	btSolverBody)
-{
-	btVector3		m_centerOfMassPosition;
-	btVector3		m_linearVelocity;
-	btVector3		m_angularVelocity;
-	btRigidBody*	m_originalBody;
-	float			m_invMass;
-	float			m_friction;
-	float			m_unused;
-
-	inline void	getVelocityInLocalPoint(const btVector3& rel_pos, btVector3& velocity ) const
-	{
-		velocity = m_linearVelocity + m_angularVelocity.cross(rel_pos);
-	}
-
-	//Optimization for the iterative solver: avoid calculating constant terms involving inertia, normal, relative position
-	inline void internalApplyImpulse(const btVector3& linearComponent, const btVector3& angularComponent,btScalar impulseMagnitude)
-	{	
-		m_linearVelocity += linearComponent*impulseMagnitude;
-		m_angularVelocity += angularComponent*impulseMagnitude;
-	}
-
-	void	writebackVelocity()
-	{
-		if (m_invMass)
-		{
-			m_originalBody->setLinearVelocity(m_linearVelocity);
-			m_originalBody->setAngularVelocity(m_angularVelocity);
-		}
-	}
-
-	void	readVelocity()
-	{
-		if (m_invMass)
-		{
-			m_linearVelocity = m_originalBody->getLinearVelocity();
-			m_angularVelocity = m_originalBody->getAngularVelocity();
-		}
-	}
-
-	
-
-	inline void	applyImpulse(const btVector3& impulse,const btVector3& rel_pos)
-	{
-		if (m_invMass)
-		{
-			m_linearVelocity += impulse * m_invMass;
-			btVector3 torqueImpulse = rel_pos.cross(impulse);
-//			m_angularVelocity += m_invInertiaWorld * torqueImpulse;
-		}
-	}
-
-};
-
-#endif //BT_SOLVER_BODY_H
\ No newline at end of file