remove '&' from URL patterns

'/?&#' -> '/?#' and '?&#' -> '?#'

According to https://www.ietf.org/rfc/rfc3986.txt, URLs are
"organized hierarchically" by using "the slash ("/"), question
mark ("?"), and number sign ("#") characters to delimit components"

gallery_dl/extractor/fuskator.py

@@ -17,7 +17,7 @@ class FuskatorGalleryExtractor(GalleryExtractor):
     """Extractor for image galleries on fuskator.com"""
     category = "fuskator"
     root = "https://fuskator.com"
-    pattern = r"(?:https?://)?fuskator\.com/(?:thumbs|expanded)/([^/?&#]+)"
+    pattern = r"(?:https?://)?fuskator\.com/(?:thumbs|expanded)/([^/?#]+)"
     test = (
         ("https://fuskator.com/thumbs/d0GnIzXrSKU/", {
             "pattern": r"https://i\d+.fuskator.com/large/d0GnIzXrSKU/.+\.jpg",