Twenty Eleven: twentyeleven_url_grabber() should not be pluggable

[nacin]

Looking at [23474]. In the past, we've had two types of functions for default themes:

1. It's a function that gets used in a theme. Should be pluggable.

2. It's a function that gets used as a hook callback. No need to be pluggable.

However, twentyeleven_url_grabber() is a utility function. It wasn't an oversight, rather, I don't think there is a valid reason for it to be pluggable. Any change in the regular expression could expose a security vulnerability. A function to extract items from content could certainly make for a good core function, and there are tickets for that. But allowing this function to be pluggable doesn't help much.

[lancewillett]

Agreed on all points. Once #23618 is closed we can avoid the issue entirely by deleting the entire function from the theme.

[lancewillett]

Fixed with r23792.