USB: HCD: remove logic about which hcd is loaded

USB: HCD: remove logic about which hcd is loaded

It turns out that warning about which USB host controller is loaded
before another one doesn't really matter.  All that really is needed is
the PCI softdep module loading logic, which has been present in the
kernel ever since commit 05c92da0c524 ("usb: ohci/uhci - add soft
dependencies on ehci_pci")

So remove the warning messages, they are not useful, not needed, and
only confuse people.  As can be seen in the discussion at
https://lore.kernel.org/r/20251230080014.3934590-1-chenhuacai@loongson.cn

Cc: Huacai Chen <chenhuacai@loongson.cn>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Link: https://patch.msgid.link/2026010739-diffuser-shelter-e31c@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>