Removed broken test when matching accounts in sipsimple.session

Ignore-this: 5466705cf8cf81880dab3801fd287d82

darcs-hash:20090326113008-1e3d8-15ddc9cad6c85ced18bb798dbee16ef344ba53da
sip_session: disable the accounts other than the selected one

darcs-hash:20090326113653-b2873-3ee734e1fff3041ad1fabb95d591f78859fc5cd2