staging: r8188eu: DYNAMIC_BB_DYNAMIC_TXPWR is not used

Remove the DYNAMIC_BB_DYNAMIC_TXPWR capability. It is cleared but not used.

DYNAMIC_BB_DYNAMIC_TXPWR defines a bit in podmpriv->SupportAbility that's
set or cleared. There's no code that checks this bit explicitly.

There's also no code that makes a copy of SupportAbility and checks the
DYNAMIC_BB_DYNAMIC_TXPWR in the copy. SupportAbility is copied to
podmpriv->BK_SupportAbility. The only use of BK_SupportAbility is to
restore a previously saved value. The other remaining reader of
SupportAbility is a private debug ioctl.

It's safe to assume that DYNAMIC_BB_DYNAMIC_TXPWR is not used, not even
indirectly.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220321203031.143486-4-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_wlan_util.c

@@ -1275,14 +1275,10 @@ void update_IOT_info(struct adapter *padapter)
 	case HT_IOT_PEER_RALINK:
 		pmlmeinfo->turboMode_cts2self = 0;
 		pmlmeinfo->turboMode_rtsen = 1;
-		/* disable high power */
-		Switch_DM_Func(padapter, (u32)(~DYNAMIC_BB_DYNAMIC_TXPWR), false);
 		break;
 	case HT_IOT_PEER_REALTEK:
 		/* rtw_write16(padapter, 0x4cc, 0xffff); */
 		/* rtw_write16(padapter, 0x546, 0x01c0); */
-		/* disable high power */
-		Switch_DM_Func(padapter, (u32)(~DYNAMIC_BB_DYNAMIC_TXPWR), false);
 		break;
 	default:
 		pmlmeinfo->turboMode_cts2self = 0;

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -1431,8 +1431,6 @@ void SetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariab
 				podmpriv->SupportAbility = DYNAMIC_FUNC_DISABLE;
 			} else if (dm_func == 1) {/* disable DIG */
 				podmpriv->SupportAbility  &= (~DYNAMIC_BB_DIG);
-			} else if (dm_func == 2) {/* disable High power */
-				podmpriv->SupportAbility  &= (~DYNAMIC_BB_DYNAMIC_TXPWR);
 			} else if (dm_func == 3) {/* disable tx power tracking */
 				podmpriv->SupportAbility  &= (~DYNAMIC_RF_CALIBRATION);
 			} else if (dm_func == 5) {/* disable antenna diversity */

drivers/staging/r8188eu/include/rtw_mlme_ext.h

@@ -30,7 +30,6 @@
 /*  ====== ODM_ABILITY_E ======== */
 /*  BB ODM section BIT 0-15 */
 #define	DYNAMIC_BB_DIG				BIT(0)
-#define	DYNAMIC_BB_DYNAMIC_TXPWR	BIT(2)
 
 #define		DYNAMIC_BB_ANT_DIV			BIT(6)