nfc: hci: Remove unused nfc_llc_unregister

nfc_llc_unregister() has been unused since it was added in 2012's
commit 67cccfe ("NFC: Add an LLC Core layer to HCI")

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20250219020258.297995-1-linux@treblig.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

net/nfc/hci/llc.c

@@ -78,17 +78,6 @@ static struct nfc_llc_engine *nfc_llc_name_to_engine(const char *name)
 	return NULL;
 }
 
-void nfc_llc_unregister(const char *name)
-{
-	struct nfc_llc_engine *llc_engine;
-
-	llc_engine = nfc_llc_name_to_engine(name);
-	if (llc_engine == NULL)
-		return;
-
-	nfc_llc_del_engine(llc_engine);
-}
-
 struct nfc_llc *nfc_llc_allocate(const char *name, struct nfc_hci_dev *hdev,
 				 xmit_to_drv_t xmit_to_drv,
 				 rcv_to_hci_t rcv_to_hci, int tx_headroom,

net/nfc/hci/llc.h

@@ -40,7 +40,6 @@ struct nfc_llc {
 void *nfc_llc_get_data(struct nfc_llc *llc);
 
 int nfc_llc_register(const char *name, const struct nfc_llc_ops *ops);
-void nfc_llc_unregister(const char *name);
 
 int nfc_llc_nop_register(void);