Remove unneeded code

assets/js/leaflet/L.MaidenheadColouredGridmasterMap.js

@@ -45,8 +45,6 @@ L.Maidenhead = L.LayerGroup.extend({
 		var e = bounds.getEast();
 		var n = bounds.getNorth();
 		var s = bounds.getSouth();
-		var field_lat_cor = new Array(0, 8, 8, 9, 8, 7, 6, 8, 8, 8, 1.4, 2.5, 3, 3.5, 4, 4, 3.5, 3.5, 3, 1.8, 1.6); // Used for field text offset
-		var field_cor = field_lat_cor[zoom];
 		var c = 0.2;
 		if (n > 85) n = 85;
 		if (s < -85) s = -85;