Trivial: Remove unnecessary format specifier
Trivial: Remove unnecessary format specifier

Removed an unnecessary "console_id" format specifier from the
exception message.

Change-Id: I85fe5710af7f391c286848593b4d64f21771d598

klmitch/nova,vmturbo/nova,openstack/nova,rahulunair/nova,vmturbo/nova,jianghuaw/nova,jianghuaw/nova,gooddata/openstack-nova,klmitch/nova,openstack/nova,jianghuaw/nova,klmitch/nova,Juniper/nova,Juniper/nova,mahak/nova,gooddata/openstack-nova,vmturbo/nova,phenoxim/nova,rahulunair/nova,mikalstill/nova,gooddata/openstack-nova,Juniper/nova,klmitch/nova,jianghuaw/nova,openstack/nova,vmturbo/nova,phenoxim/nova,mahak/nova,mikalstill/nova,Juniper/nova,mikalstill/nova,rahulunair/nova,gooddata/openstack-nova,mahak/nova