remove some TODO comments

libraries/entities/src/EntityItem.cpp

@@ -1015,7 +1015,6 @@ void EntityItem::recalculateCollisionShape() {
     entityAACube.scale(TREE_SCALE); // scale to meters
     _collisionShape.setTranslation(entityAACube.calcCenter());
     _collisionShape.setScale(entityAACube.getScale());
-    // TODO: use motionState to update physics object
 }
 
 const float MIN_POSITION_DELTA = 0.0001f;

libraries/physics/src/ObjectMotionState.cpp

@@ -154,8 +154,6 @@ bool ObjectMotionState::shouldSendUpdate(uint32_t simulationFrame, float subStep
     // NOTE: math in done the simulation-frame, which is NOT necessarily the same as the world-frame 
     // due to _worldOffset.
 
-    // TODO: Andrew to reconcile Bullet and legacy damping coefficients.
-
     // compute position error
     if (glm::length2(_sentVelocity) > 0.0f) {
         _sentVelocity += _sentAcceleration * dt;

libraries/physics/src/ObjectMotionState.h

@@ -111,7 +111,7 @@ protected:
     glm::vec3 _sentPosition;    // in simulation-frame (not world-frame)
     glm::quat _sentRotation;;
     glm::vec3 _sentVelocity;
-    glm::vec3 _sentAngularVelocity;
+    glm::vec3 _sentAngularVelocity; // radians per second
     glm::vec3 _sentAcceleration;
 };