Actually don't emit "Unable to stat file" debug messages at all; we have...

Actually don't emit "Unable to stat file" debug messages at all; we have entirely-artificial directory "entries" such as ELF sections which, of course, will never exist as files.

diffoscope/comparators/directory.py

@@ -175,7 +175,6 @@ def compare_meta(path1, path2):
         stat1 = os.lstat(path1)
         stat2 = os.lstat(path2)
     except Exception as e:
-        logger.debug(f'Unable to stat file "{path1}" or "{path2}" ({str(e)})')
         return []
 
     differences = []