Shorten comments on _decode steps

This removes the parenthesized examples from the per-step comments
in the WinBashStatus._decode helper.

test/test_index.py

@@ -139,10 +139,6 @@ def _decode(stdout):
  # uses the ASCII subset, so we can safely guess a wrong code page for it. Errors
  # from such an environment can contain any text, but unlike WSL's own messages,
  # they go to stderr, not stdout. So we can try the system ANSI code page first.
- # (Console programs often use the OEM code page, but the ACP seems more accurate
- # here. For example, on en-US Windows with the original system code page but the
- # display language set to fr-FR, the message, if not UTF-16LE, is windows-1252,
- # same as the ACP, while the OEMCP is 437, which can't decode its accents.)
  acp = _get_windows_ansi_encoding()
  try:
  return stdout.decode(acp)
@@ -151,10 +147,7 @@ def _decode(stdout):
  except LookupError as error:
  log.warning("%s", str(error)) # Message already says "Unknown encoding:".
 
- # Assume UTF-8. If invalid, substitute Unicode replacement characters. (For
- # example, on zh-CN Windows set to display fr-FR, errors from WSL itself, if not
- # UTF-16LE, are in windows-1252, even though the ANSI and OEM code pages both
- # default to 936, and decoding as code page 936 or as UTF-8 both have errors.)
+ # Assume UTF-8. If invalid, substitute Unicode replacement characters.
  return stdout.decode("utf-8", errors="replace")