I think it may already be taken out in Basix?
You can find out. Enter ##DATA# in your dialer, the hidden menu will come up. It's under Browser Settings, iirc. You will need to enter your SPC code to get in there. After that, you can just clear out the url and the port number.
But I'm not sure it helps anything. I know it doesn't fix our current tethering browsing issue (as discussed in other threads about that).