HTTP traversal shouldnt upcase METHOD (@wchen-r7)

If the user wants to use downcased or mixed case HTTP methods, heck,
more power to them. If it doesn't work, it doesn't work. No other HTTP
module makes this call.

modules/auxiliary/scanner/http/http_traversal.rb

@@ -336,9 +336,6 @@ class Metasploit3 < Msf::Auxiliary
       datastore['PATH'] = '/' + datastore['PATH']
     end
 
-    # Some webservers (ie. Apache) might not like the HTTP method to be lower-case
-    datastore['METHOD'] = datastore['METHOD'].upcase
-
     print_status("Running action: #{action.name}...")
 
     # And it's..... "SHOW TIME!!"