Report which body has too-small mass/inertia in compilation error.

PiperOrigin-RevId: 776196017
Change-Id: Ib81efb170347a57cdc4b446c14cd7b8f5357958c

src/user/user_model.h

@@ -425,9 +425,6 @@ class mjCModel : public mjCModel_, private mjSpec {
   // compute qpos0
   void ComputeReference();
 
-  // return true if all bodies have valid mass and inertia
-  bool CheckBodiesMassInertia(std::vector<mjCBody*> bodies);
-
   // return true if body has valid mass and inertia
   bool CheckBodyMassInertia(mjCBody* body);