removed TLS checkbox for alert email settings
removed TLS checkbox for alert email settings

Because we don't ship crypto in 1.7.x.

Change-Id: I023218528caa2bb786066d68faeac1e42de1559f
Reviewed-on: http://review.couchbase.org/7737
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Bin Cui <ed18693fff32c00e22495f4877a3b901bed09041@gmail.com>

t3rm1n4l/ns_server,t3rm1n4l/ns_server,nimishzynga/ns_server,daverigby/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,ceejatec/ns_server,mschoch/ns_server,ceejatec/ns_server,mschoch/ns_server,daverigby/ns_server,nimishzynga/ns_server,pavel-blagodov/ns_server,vzasade/ns_server,t3rm1n4l/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,ceejatec/ns_server,nimishzynga/ns_server,vzasade/ns_server,membase/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,membase/ns_server,vzasade/ns_server,ceejatec/ns_server,pavel-blagodov/ns_server,mschoch/ns_server,mschoch/ns_server,nimishzynga/ns_server,daverigby/ns_server,membase/ns_server,daverigby/ns_server,membase/ns_server,mschoch/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,daverigby/ns_server,nimishzynga/ns_server