nfc: st21nfca: drop ftrace-like debugging messages

Now that the kernel has ftrace, any debugging calls that just do "made
it to this function!" and "leaving this function!" can be removed.
Better to use standard debugging tools.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210531073902.7111-5-krzysztof.kozlowski@canonical.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/nfc/st21nfca/i2c.c

@@ -502,9 +502,6 @@ static int st21nfca_hci_i2c_probe(struct i2c_client *client,
 	struct st21nfca_i2c_phy *phy;
 	int r;
 
-	dev_dbg(&client->dev, "%s\n", __func__);
-	dev_dbg(&client->dev, "IRQ: %d\n", client->irq);
-
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
 		nfc_err(&client->dev, "Need I2C_FUNC_I2C\n");
 		return -ENODEV;
@@ -568,8 +565,6 @@ static int st21nfca_hci_i2c_remove(struct i2c_client *client)
 {
 	struct st21nfca_i2c_phy *phy = i2c_get_clientdata(client);
 
-	dev_dbg(&client->dev, "%s\n", __func__);
-
 	st21nfca_hci_remove(phy->hdev);
 
 	if (phy->powered)