Remove extraneous variable

Author: wvu

modules/exploits/multi/http/phpmyadmin_preg_replace.rb

@@ -166,7 +166,7 @@ def exploit
     end
 
     db = rand_text_alpha(3+rand(3))
-    exploit_result = send_request_cgi({
+    send_request_cgi({
       'uri'	=> normalize_uri(uri, 'db_structure.php'),
       'method' => 'POST',
       'cookie' => cookies,