This commit:
* Removes various comments referencing PHP versions which are no longer supported.
* Removes various comments containing “hints” of things to do after a particular PHP version drop. These hints are incorrect/not actionable for various reasons, so have no value:
* Even though a function could be turned into a closure, removing the function would be a backward compatibility break which is not acceptable, so this suggestion is not actionable.
* Short ternaries are forbidden by the coding standard exactly to prevent the faulty code suggested in the comment from getting into the codebase.
Follow-up to [1243/tests], [6543], [11816], [29861], [29864], [34928], [35369], [36698], [38694], [50786], [58678].
Props jrf, ayeshrajans.
See #61574.
Built from https://develop.svn.wordpress.org/trunk@58682
git-svn-id: http://core.svn.wordpress.org/trunk@58084 1a063a9b-81f0-0310-95a4-ce76da25c4cd
11fb201256