LibJS: Remove Shape::global_object() and Object::global_object()

Same reason as in commit 275dea9.

Userland/Libraries/LibJS/Runtime/GlobalObject.h

@@ -38,11 +38,6 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(unescape);
 };
 
-inline GlobalObject* Shape::global_object() const
-{
-    return &static_cast<GlobalObject&>(m_realm.global_object());
-}
-
 template<>
 inline bool Object::fast_is<GlobalObject>() const { return is_global_object(); }
 

Userland/Libraries/LibJS/Runtime/Object.cpp

@@ -34,11 +34,6 @@ Object* Object::create(Realm& realm, Object* prototype)
         return realm.heap().allocate<Object>(realm, *prototype);
 }
 
-GlobalObject& Object::global_object() const
-{
-    return *shape().global_object();
-}
-
 Object::Object(GlobalObjectTag, Realm& realm)
 {
     // This is the global object

Userland/Libraries/LibJS/Runtime/Object.h

@@ -186,8 +186,6 @@ public:
     Shape& shape() { return *m_shape; }
     Shape const& shape() const { return *m_shape; }
 
-    GlobalObject& global_object() const;
-
     void ensure_shape_is_unique();
 
     template<typename T>

Userland/Libraries/LibJS/Runtime/Shape.cpp

@@ -5,8 +5,8 @@
  */
 
 #include <LibJS/Heap/DeferGC.h>
-#include <LibJS/Runtime/GlobalObject.h>
 #include <LibJS/Runtime/Shape.h>
+#include <LibJS/Runtime/VM.h>
 
 namespace JS {
 

Userland/Libraries/LibJS/Runtime/Shape.h

@@ -62,7 +62,6 @@ public:
     Shape* create_unique_clone() const;
 
     Realm& realm() const { return m_realm; }
-    GlobalObject* global_object() const;
 
     Object* prototype() { return m_prototype; }
     Object const* prototype() const { return m_prototype; }