staging: r8188eu: remove unused cases from GetHalDefVar8188EUsb()

GetHalDefVar8188EUsb() is never called with HAL_DEF_DRVINFO_SZ,
HAL_DEF_RA_DECISION_RATE, HAL_DEF_RA_SGI and HAL_DEF_PT_PWR_STATUS.
Remove these cases from the function.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220128115445.6606-3-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/hal/usb_halinit.c

@@ -1622,30 +1622,9 @@ u8 GetHalDefVar8188EUsb(struct adapter *Adapter, enum hal_def_variable eVariable
 	case HAL_DEF_CURRENT_ANTENNA:
 		*((u8 *)pValue) = haldata->CurAntenna;
 		break;
-	case HAL_DEF_DRVINFO_SZ:
-		*((u32 *)pValue) = DRVINFO_SZ;
-		break;
 	case HAL_DEF_DBG_DM_FUNC:
 		*((u32 *)pValue) = haldata->odmpriv.SupportAbility;
 		break;
-	case HAL_DEF_RA_DECISION_RATE:
-		{
-			u8 MacID = *((u8 *)pValue);
-			*((u8 *)pValue) = ODM_RA_GetDecisionRate_8188E(&haldata->odmpriv, MacID);
-		}
-		break;
-	case HAL_DEF_RA_SGI:
-		{
-			u8 MacID = *((u8 *)pValue);
-			*((u8 *)pValue) = ODM_RA_GetShortGI_8188E(&haldata->odmpriv, MacID);
-		}
-		break;
-	case HAL_DEF_PT_PWR_STATUS:
-		{
-			u8 MacID = *((u8 *)pValue);
-			*((u8 *)pValue) = ODM_RA_GetHwPwrStatus_8188E(&haldata->odmpriv, MacID);
-		}
-		break;
 	case HW_VAR_MAX_RX_AMPDU_FACTOR:
 		*((u32 *)pValue) = MAX_AMPDU_FACTOR_64K;
 		break;

drivers/staging/r8188eu/include/hal_intf.h

@@ -75,12 +75,8 @@ enum hal_def_variable {
 	HAL_DEF_UNDERCORATEDSMOOTHEDPWDB,
 	HAL_DEF_IS_SUPPORT_ANT_DIV,
 	HAL_DEF_CURRENT_ANTENNA,
-	HAL_DEF_DRVINFO_SZ,
 	HAL_DEF_DBG_DUMP_RXPKT,/* for dbg */
 	HAL_DEF_DBG_DM_FUNC,/* for dbg */
-	HAL_DEF_RA_DECISION_RATE,
-	HAL_DEF_RA_SGI,
-	HAL_DEF_PT_PWR_STATUS,
 	HW_VAR_MAX_RX_AMPDU_FACTOR,
 	HW_DEF_RA_INFO_DUMP,
 	HAL_DEF_DBG_DUMP_TXPKT,