Fixing removeTileAt, removeTileAtWorldXY docs

The 'tile' parameter was not included in the actual code, so it's removed here from the documentation.

Author: tarsupin

src/tilemaps/Tilemap.js

@@ -1524,7 +1524,6 @@ var Tilemap = new Class({
      * @method Phaser.Tilemaps.Tilemap#removeTileAt
      * @since 3.0.0
      *
-     * @param {(integer|Phaser.Tilemaps.Tile)} tile - The index of this tile to set or a Tile object.
      * @param {integer} tileX - [description]
      * @param {integer} tileY - [description]
      * @param {boolean} [replaceWithNull=true] - If true, this will replace the tile at the specified
@@ -1555,7 +1554,6 @@ var Tilemap = new Class({
      * @method Phaser.Tilemaps.Tilemap#removeTileAtWorldXY
      * @since 3.0.0
      *
-     * @param {(integer|Phaser.Tilemaps.Tile)} tile - The index of this tile to set or a Tile object.
      * @param {number} worldX - [description]
      * @param {number} worldY - [description]
      * @param {boolean} [replaceWithNull=true] - If true, this will replace the tile at the specified