Remove extra comma, fixes syntax errors in 1.8

Thanks, Kanedaaa, for reporting

modules/exploits/multi/http/hp_sitescope_uploadfileshandler.rb

@@ -102,7 +102,7 @@ class Metasploit3 < Msf::Exploit::Remote
 		print_status("#{@peer} - Retrieving an initial JSESSIONID")
 		res = send_request_cgi(
 			'uri'    => "#{@uri}servlet/Main",
-			'method' => 'POST',
+			'method' => 'POST'
 		)
 
 		if res and res.code == 200 and res.headers['Set-Cookie'] =~ /JSESSIONID=([0-9A-F]*);/