platform/x86: wmi: remove unnecessary checks

The `find_guid_context()` is only called from one place,
and `wblock` and `wdriver` cannot be NULL there.
So remove the currently redundant checks.
Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Link: https://lore.kernel.org/r/20210904175450.156801-11-pobrn@protonmail.comReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/wmi.c

@@ -135,8 +135,6 @@ static const void *find_guid_context(struct wmi_block *wblock,
 	const struct wmi_device_id *id;
 	guid_t guid_input;
 
-	if (wblock == NULL || wdriver == NULL)
-		return NULL;
 	if (wdriver->id_table == NULL)
 		return NULL;