just as a info ...

you can also edit the provider name (if you want), so you don't have to delete it. because if you do so and you will travel abroad, then you will not know which provider you are using there!!!... so I think it is much better to write a patch to change the common provider you use (if you want to delete, then use space-characters), you will see the change, when using other providers (e.g. abroad). For that you have to change the firmware ... there exist a lot of guides to do that ... using a patch.

One comment! it is not working for some providers like o2-Germany (, which I am using right now) ... because some providers are not using the firmware to show provider name, instead of that they use the sim-card (in Germany thats the only provider, which is doing so (as far as I know)).