Revert "mshtml: Return wine: URI for protocols handled by MSHTML."

[Jacek Caban]

Vitaliy Margolen wrote:
> I do not know what author wanted to archive here. But what he did
> archive is broken Wine and all other programs that use their own
> "protocol:".
>
> This reverts commit 718b771f2a57d0c762d24c6ef62f070eb3647e8a.
>
> mshtml: Revert commit that broke steam and most other apps.

This patch fixed some apps that use pluggable protocols and reverting it
is a step backward. I've sent a correct fix.

Thanks,
    Jacek