wlan: mac: remove obsolete "WLAN_SOFTAP_FEATURE" featurization

The current driver has evolved over time from a driver that originally
only supported "station" mode.  When the initial support for "Soft AP"
mode was added, the code was added with conditional compilation so
that the "Soft AP" feature could be included or excluded based upon
the target needs.  Now, however, there is an expectation that all
drivers will support both "station" mode and "Soft AP" mode.
Therefore remove the conditional compilation since "Soft AP" mode code
must always be present.

CRs-fixed: 452041
Change-Id: Ieb86ce1ff8964672de60be65ef34cf04f15d9348
diff --git a/CORE/MAC/src/pe/lim/limSmeReqUtils.c b/CORE/MAC/src/pe/lim/limSmeReqUtils.c
index 09348ff..b5182fa 100644
--- a/CORE/MAC/src/pe/lim/limSmeReqUtils.c
+++ b/CORE/MAC/src/pe/lim/limSmeReqUtils.c
@@ -50,7 +50,7 @@
  * Date           Modified by    Modification Information
  * --------------------------------------------------------------------
  * 05/26/10       js             WPA handling in (Re)Assoc frames
- * 
+ *
  */
 
 #include "wniApi.h"
@@ -250,7 +250,6 @@
     return true;
 } /*** end limIsAddieValidInSmeReqMessage() ***/
 
-#ifdef WLAN_SOFTAP_FEATURE
 /**
  * limSetRSNieWPAiefromSmeStartBSSReqMessage()
  *
@@ -396,7 +395,6 @@
 
     return true;
 } /*** end limSetRSNieWPAiefromSmeStartBSSReqMessage() ***/
-#endif
 
 #if (WNI_POLARIS_FW_PACKAGE == ADVANCED) && (WNI_POLARIS_FW_PRODUCT == AP)
 /**
@@ -590,11 +588,9 @@
         case eSIR_BTAMP_AP_MODE:
             break;
 
-#ifdef WLAN_SOFTAP_FEATURE
         /* Added for SoftAP support */
         case eSIR_INFRA_AP_MODE:
             break;
-#endif
         
         default:
             /**