Obtain xml import url path without query param

Fixed problem evaluating WSDL files with xml imports containing relative URLs with query params. Code was incorrectly returning full uri rather than just the path and subsequently adding the path a second time. This resulted in the import not being found.

xmlschema/locations.py

@@ -57,7 +57,7 @@ def from_uri(cls, uri: str) -> 'LocationPath':
 
         parts = urlsplit(uri)
         if not parts.scheme:
-            return cls(uri)
+            return cls(parts.path)
         elif parts.scheme in DRIVE_LETTERS and len(parts.scheme) == 1:
             return LocationWindowsPath(uri)  # Eg. k:/Python/lib/....
         elif parts.scheme != 'file':