Remove dead code in shapes.c and shapes.h

shape.c

@@ -33,12 +33,6 @@ rb_shape_id(rb_shape_t * shape)
     return (shape_id_t)(shape - GET_VM()->shape_list);
 }
 
-bool
-rb_shape_root_shape_p(rb_shape_t* shape)
-{
-    return shape == rb_shape_get_root_shape();
-}
-
 void
 rb_shape_each_shape(each_shape_callback callback, void *data)
 {
@@ -60,16 +54,6 @@ rb_shape_get_shape_by_id(shape_id_t shape_id)
     return shape;
 }
 
-rb_shape_t*
-rb_shape_get_shape_by_id_without_assertion(shape_id_t shape_id)
-{
-    RUBY_ASSERT(shape_id != INVALID_SHAPE_ID);
-
-    rb_vm_t *vm = GET_VM();
-    rb_shape_t *shape = &vm->shape_list[shape_id];
-    return shape;
-}
-
 rb_shape_t *
 rb_shape_get_parent(rb_shape_t * shape)
 {

shape.h

@@ -126,12 +126,9 @@ static inline shape_id_t RCLASS_SHAPE_ID(VALUE obj)
 
 #endif
 
-bool rb_shape_root_shape_p(rb_shape_t* shape);
 rb_shape_t * rb_shape_get_root_shape(void);
-uint8_t rb_shape_id_num_bits(void);
 int32_t rb_shape_id_offset(void);
 
-rb_shape_t* rb_shape_get_shape_by_id_without_assertion(shape_id_t shape_id);
 rb_shape_t * rb_shape_get_parent(rb_shape_t * shape);
 
 MJIT_SYMBOL_EXPORT_BEGIN