qcacmn: Remove filling mgmt_ctrl frame buffer for NON TLV payload

Reverting the change where mgmt ctrl frame buffer was assinged NULL for
NONTLV payload case as this check is handled later in the same path.

Change-Id: Icccfb401fe34da593198bac27650139654021636
CRs-Fixed: 2276923
diff --git a/dp/wifi3.0/dp_htt.c b/dp/wifi3.0/dp_htt.c
index c854876..190da69 100644
--- a/dp/wifi3.0/dp_htt.c
+++ b/dp/wifi3.0/dp_htt.c
@@ -2514,8 +2514,6 @@
 				(uint32_t *)((uint8_t *)tlv_buf + tlv_length);
 			length -= (tlv_length);
 			continue;
-		} else {
-			pdev->mgmtctrl_frm_info.mgmt_buf = NULL;
 		}
 
 		ppdu_info = dp_get_ppdu_desc(pdev, ppdu_id, tlv_type);