[6.1] Fix hr_interview dependency on smtpclient

[dreispt]

6.1 tests are failing because:

except_orm: (u'Error', u"You try to install module 'hr_interview' that depends
on module 'smtpclient'.\nBut the latter module is not available in your system.")

[bwrsandman]

Module is from extra addons
http://bazaar.launchpad.net/~credativ/openobject-addons/extra-6.1/files/head:/smtpclient/

[dreispt]

IMO the dependency should be removed. Or at least isolated in a non-OCA module.

[bwrsandman]

Will the module work without that deps?

[dreispt]

Didn't read the code, but from the description of smtpclient I don't see why it shouldn't.
I'm for a quick fix removing the features where the dependency is required.
Probably current Email Templates can do the job, and anyone interested can properly restore them in a later PR.