NetworkPkg: Remove redundant code in HTTP boot driver.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Sriram Subramanian <sriram-s@hpe.com>
Reviewed-by: Wu Jiaxin <jiaxin.wu@intel.com>
Reviewed-by: Zhang Lubo <lubo.zhang@intel.com>

NetworkPkg/HttpBootDxe/HttpBootDhcp6.c

@@ -418,9 +418,6 @@ HttpBootDhcp6CallBack (
    HTTP_BOOT_PRIVATE_DATA          *Private;
    EFI_DHCP6_PACKET                *SelectAd;
    EFI_STATUS                      Status;
-   if ((Dhcp6Event != Dhcp6RcvdAdvertise) && (Dhcp6Event != Dhcp6SelectAdvertise)) {
-     return EFI_SUCCESS;
-   }
 
    ASSERT (Packet != NULL);