remove personal email from fixtures

[rimian]

I'm writing acceptance tests against the user fixture in my plugin. It would be a good idea to use a generic email address as I'd like to respect eviltrout's privacy and not have the email leak out into other repositories :)

[mention-bot]

Thanks @rimian for your pull request 👍. By analyzing the blame information on this pull request, I identified @eviltrout to be potential reviewers.

[discoursebot]

You've signed the CLA, rimian. Thank you! This pull request is ready for review.

[SamSaffron]

@eviltrout since it is your email :) note email is still there in the commit messages so I am not sure how much this is really important

[rimian]

@SamSaffron here's my test: https://github.com/choiceaustralia/choice-discourse/blob/master/test/javascripts/acceptance/choice-discourse-test.es6

I was checking the email address which means I need to hard code it in a third party repo. It would be good not to have to worry about it.

Many thanks!