Section 3.6.2. rdActor – Instancing – Removing
// [rdInst v1.00] Removes the Instance referred to by index for the specified StaticMesh
void rdRemoveInstance(UStaticMesh* mesh,int32 index);
// [rdInst v1.00] Removes the Instance referred to by index in the HISMC
void rdRemoveInstanceFast(UInstancedStaticMeshComponent* instGen,int32 index);
// [rdInst v1.00] Removes all the StaticMesh Instances in our Actors Instance List
void rdClearInstanceList();
// [rdInst v1.00] Removes all Instanced Static Meshes associated with this Actor
void rdRemoveInstances();
// [rdInst v1.00] Removes all Instanced Static Meshes on all actors
void rdResetAllInstances();