Remove Unit Direction method

Source/Engine/Core/Math/Vector3.cs

@@ -1245,17 +1245,6 @@ namespace FlaxEngine
             return new Vector3(Math.Abs(v.X), Math.Abs(v.Y), Math.Abs(v.Z));
         }
 
-        /// <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>
-        public static Vector3 UnitDirection(Vector3 a, Vector3 b)
-        {
-            return (b - a).Normalized;
-        }
-
         /// <summary>
         /// Projects a vector onto another vector.
         /// </summary>