Remove unused sphere.finalBearing() method

src/ol/sphere/sphere.js

@@ -88,18 +88,6 @@ ol.Sphere.prototype.equirectangularDistance = function(c1, c2) {
 };
 
 
-/**
- * Returns the final bearing from c1 to c2.
- *
- * @param {ol.Coordinate} c1 Coordinate 1.
- * @param {ol.Coordinate} c2 Coordinate 2.
- * @return {number} Initial bearing.
- */
-ol.Sphere.prototype.finalBearing = function(c1, c2) {
-  return (this.initialBearing(c2, c1) + 180) % 360;
-};
-
-
 /**
  * Returns the distance from c1 to c2 using the haversine formula.
  *