rb: Remove unused PhantomJS port option

Author: p0deje

rb/lib/selenium/webdriver/phantomjs/bridge.rb

@@ -33,9 +33,8 @@ def initialize(opts = {})
             url = opts.delete(:url)
           else
             args = opts.delete(:args) || caps['phantomjs.cli.args']
-            port = opts.delete(:port)
 
-            @service = Service.default_service(port)
+            @service = Service.default_service
             @service.start(args)
 
             url = @service.uri

rb/lib/selenium/webdriver/phantomjs/service.rb

@@ -42,7 +42,7 @@ def self.executable_path
           )
         end
 
-        def self.default_service(port = nil)
+        def self.default_service
           new executable_path, DEFAULT_PORT
         end