Revert "Fixed incorrect routing if url path looks like a domain name [#2184]"

Previous change broke running Grav under Load Balancer with custom_base_url
set. Also, it's not a good idea to add 3rd party domain into host value,
which could be accidently reused some time in the future.

This (not counting CHANGELOG) reverts commit 0af33850a6.

system/src/Grav/Common/Uri.php

@@ -205,8 +205,8 @@ class Uri
         // set active language
         $uri = $language->setActiveFromUri($uri);
 
-        // split the URL and params (and make sure that the path isn't seen as domain)
-        $bits = parse_url('http://domain.com' . $uri);
+        // split the URL and params
+        $bits = parse_url($uri);
 
         //process fragment
         if (isset($bits['fragment'])) {