[HTTPS-Everywhere] Shell cleanup

[Alex Xu]

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Change to `find` already made in my commit
https://github.com/Hello71/HTTPS-Everywhere/commit/b74e657f6475e3a6978d390e5f04fb3496a2eb13.

    echo >&2 "Rules disabled by default: `find chrome/content/rules
- -name "*.xml" | xargs grep -F default_off | wc -l`"

On 11-10-07 04:46 AM, Victor Engmark wrote:
> Hi all,
> 
> I've done a bit of cleanup of the shell code:
> <https://github.com/l0b0/https-everywhere/commits/master>
> 
> I'd like to do more, but it would be nice to know whether these
> changes are acceptable, and if not, why. If they are acceptable,
> you're welcome to pull.
> 
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