Removed autodetection of this charset due to unreliability.
There are known security issues around charset auto-detection for ISO-2022-JP.
Given the usage is around 0.000002% of page loads, and Safari does not
support auto-detection of ISO-2022-JP, Chrome also planned to remove
support for it to eliminate the security issues.
See also https://www.sonarsource.com/blog/encoding-differentials-why-charset-matters/
Removal from the menu to avoid social engineering hazards and it being
literally unused on the web.
Since these are just interpreted comments, there's 0 impact on actual code.
This removes all lines that match /* vim: set(.*)tw=80: */ with S&R -- there are
a few others scattered around which will be removed manually in a second part.
Moonchild
Matt A. Tobin