Revert "slapos_subscription_request: subcription request test fixing"

This reverts commit 7698537e.

master/bt5/slapos_subscription_request/SkinTemplateItem/portal_skins/slapos_subscription_request/SubscriptionRequestModule_requestSubscriptionProxy.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>email, subscription_reference, payment_mode=None, confirmation_required=False, user_input_dict={}, batch_mode=True, REQUEST=None</string> </value>
+            <value> <string>email, subscription_reference, payment_mode, confirmation_required=False, user_input_dict={}, batch_mode=True, REQUEST=None</string> </value>
         </item>
         <item>
             <key> <string>_proxy_roles</string> </key>

master/bt5/slapos_subscription_request/SkinTemplateItem/portal_skins/slapos_subscription_request/SubscriptionRequest_createRelatedSaleInvoiceTransaction.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>amount, tag, payment, payment_mode=None, REQUEST=None</string> </value>
+            <value> <string>amount, tag, payment, payment_mode, REQUEST=None</string> </value>
         </item>
         <item>
             <key> <string>_proxy_roles</string> </key>

master/bt5/slapos_subscription_request/SkinTemplateItem/portal_skins/slapos_subscription_request/SubscriptionRequest_requestPaymentTransaction.xml

@@ -50,7 +50,7 @@
         </item>
         <item>
             <key> <string>_params</string> </key>
-            <value> <string>amount, tag, payment_mode=None, REQUEST=None</string> </value>
+            <value> <string>amount, tag, payment_mode, REQUEST=None</string> </value>
         </item>
         <item>
             <key> <string>_proxy_roles</string> </key>