I you wont to erase the configuration type this :
write erase
an then reload.
This will erase the configuration.
The vlan2 that you see is only for administrative purpouses, if you do a "no shut" in the vlan 2, this will work. If not try with the command "manage" in the vlan2. This automatically shut down your vlan1. But remember, it's only for administrative purpouses, does't means that yours port en VLANx will down.
regards.