Disable antispam for now

- some users were having issues posting
- the issues are inconsistent. we should be careful with this feature,
    perhaps even log details of what went wrong when the error for this
    is shown and analyze those logs.

inc/instance-config.php

@@ -93,6 +93,16 @@ $config['threads_preview'] = 5;
 $config['root'] = '/';
 $config['secure_trip_salt'] = 'ODQ2NDM0ODlmMmRhNzk2M2EyNjJlOW';
 
+/*
+ * Some users are having trouble posting when this is on,
+ * with the message 'Your request looks automated; Post discarded.'
+ *
+ * This did not affect all users, and for some users only for some posts.
+ *
+ * If we are getting spammed hard, try turning this on.
+ */
+$config['spam']['enabled'] = false;
+
 /*
  * Permissions
  */