staging: rtl8192e: Remove used constants MSR_LINK_SH.. and MSR_LINK_N..

Remove used constants MSR_LINK_SHIFT = 0 and MSR_LINK_NONE = 0. Use rules
a << 0 = a, 0 << 0 = 0 and msr | 0 = msr to remove dead code.
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/46bd1f075d5e4d211e1fc827843933907f7fee29.1675003608.git.philipp.g.hortmann@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c

@@ -54,22 +54,16 @@ static void _rtl92e_update_msr(struct net_device *dev)
 	switch (priv->rtllib->iw_mode) {
 	case IW_MODE_INFRA:
 		if (priv->rtllib->state == RTLLIB_LINKED)
-			msr |= (MSR_LINK_MANAGED << MSR_LINK_SHIFT);
-		else
-			msr |= (MSR_LINK_NONE << MSR_LINK_SHIFT);
+			msr |= MSR_LINK_MANAGED;
 		LedAction = LED_CTL_LINK;
 		break;
 	case IW_MODE_ADHOC:
 		if (priv->rtllib->state == RTLLIB_LINKED)
-			msr |= (MSR_LINK_ADHOC << MSR_LINK_SHIFT);
-		else
-			msr |= (MSR_LINK_NONE << MSR_LINK_SHIFT);
+			msr |= MSR_LINK_ADHOC;
 		break;
 	case IW_MODE_MASTER:
 		if (priv->rtllib->state == RTLLIB_LINKED)
-			msr |= (MSR_LINK_MASTER << MSR_LINK_SHIFT);
-		else
-			msr |= (MSR_LINK_NONE << MSR_LINK_SHIFT);
+			msr |= MSR_LINK_MASTER;
 		break;
 	default:
 		break;

drivers/staging/rtl8192e/rtl8192e/r8192E_hw.h

@@ -172,8 +172,6 @@ enum _RTL8192Pci_HW {
 	MSR			= 0x303,
 #define MSR_LINK_MASK      ((1<<0)|(1<<1))
 #define MSR_LINK_MANAGED   2
-#define MSR_LINK_NONE      0
-#define MSR_LINK_SHIFT     0
 #define MSR_LINK_ADHOC     1
 #define MSR_LINK_MASTER    3