Fix subrequest.t test

t/subrequest.t

@@ -9,7 +9,6 @@ __DATA__
     env X509_VOMS_DIR=t/vomsdir;
     env X509_CERT_DIR=t/trust-anchors;
     load_module /etc/nginx/modules/ngx_http_voms_module.so;
-    load_module /etc/nginx/modules/ngx_http_echo_module.so;
 --- http_config
     server {
         error_log logs/error.log debug;
@@ -23,11 +22,7 @@ __DATA__
             auth_request /authz;
 
             default_type text/plain;
-            # auth_request_set $pippo $some_var;
-            echo $http_pluto;
-            # echo $some_var;
-            # echo $pippo;
-            # return 200 "$pippo\n";
+            return 200;
         }
     location = /authz {
         internal;
@@ -45,5 +40,5 @@ __DATA__
 --- request
 GET / 
 --- response_body
-/C=IT/O=IGI/CN=test0
+
 --- error_code: 200