x86: remove rdc specific kernel patch

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/x86/patches-4.4/120-panic_on_unrecovered_nmi.patch

@@ -1,11 +0,0 @@
---- a/drivers/mfd/rdc321x-southbridge.c
-+++ b/drivers/mfd/rdc321x-southbridge.c
-@@ -85,6 +85,8 @@ static int rdc321x_sb_probe(struct pci_d
- 	rdc321x_gpio_pdata.sb_pdev = pdev;
- 	rdc321x_wdt_pdata.sb_pdev = pdev;
- 
-+	panic_on_unrecovered_nmi = 1;
-+
- 	return mfd_add_devices(&pdev->dev, -1,
- 			       rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells),
- 			       NULL, 0, NULL);