Fix more warnings

submodules/LegacyComponents/Sources/POPVector.h

@@ -22,10 +22,6 @@
 #import "POPMath.h"
 #import "POPDefines.h"
 
-#if SCENEKIT_SDK_AVAILABLE
-#import <SceneKit/SceneKit.h>
-#endif
-
 namespace POP {
 
   /** Fixed two-size vector class */
@@ -342,16 +338,6 @@ namespace POP {
     // CGColorRef support
     CGColorRef cg_color() const CF_RETURNS_RETAINED;
     static Vector *new_cg_color(CGColorRef color);
-    
-#if SCENEKIT_SDK_AVAILABLE
-    // SCNVector3 support
-    SCNVector3 scn_vector3() const;
-    static Vector *new_scn_vector3(const SCNVector3 &vec3);
-    
-    // SCNVector4 support
-    SCNVector4 scn_vector4() const;
-    static Vector *new_scn_vector4(const SCNVector4 &vec4);
-#endif
 
     // operator overloads
     CGFloat &operator[](size_t i) const {