Try to avoid guessit internal exception (#1858)

I was unable to reproduce the exception, but I found a strange pattern:
whenever the hints["expected_title"] value had the same value as the
title found in the filename, there was a list from the rebulk module
constantly growing. Once I remove the expected_title "hint", this
behavior is gone.

This change is transparent. If for some reason guessit returns a
different movie/series title, Bazarr will refine it with the database
anyway.

libs/subliminal_patch/core.py

@@ -759,8 +759,8 @@ def scan_video(path, dont_use_actual_file=False, hints=None, providers=None, ski
 
     # guess
     hints["single_value"] = True
-    if "title" in hints:
-        hints["expected_title"] = [hints["title"]]
+    #    if "title" in hints:
+    #        hints["expected_title"] = [hints["title"]]
 
     guessed_result = guessit(guess_from, options=hints)