Remove Unit Direction method

Source/Engine/Core/Math/Vector3.h

@@ -902,16 +902,6 @@ public:
     /// <returns>The triangle area.</returns>
     static float TriangleArea(const Vector3& v0, const Vector3& v1, const Vector3& v2);
 
-    /// <summary>
-    /// Given two points, will return the unit direction.
-    /// </summary>
-    /// <param name="a">The start position.</param>
-    /// <param name="b">The target position.</param>
-    /// <returns>The unit direction from a to b.</returns>
-    static Vector3 UnitDirection(const Vector3& a, const Vector3& b)
-    {
-        return (b - a).GetNormalized();
-    }
 };
 
 inline Vector3 operator+(float a, const Vector3& b)