Revert "Skip test_vnet_decap on Cisco-8000 with 202411 (sonic-net#17776)" (sonic-net#17941) (sonic-net#17942)

This reverts commit 02ff5e8.

Co-authored-by: Kevin Wang <65380078+kevinskwang@users.noreply.github.com>

Author: mssonicbld

tests/common/plugins/conditional_mark/tests_mark_conditions.yaml

@@ -2353,12 +2353,6 @@ vxlan/test_vnet_bgp_route_precedence.py:
       - "asic_type not in ['cisco-8000', 'mellanox']"
       - "release in ['202411']"
 
-vxlan/test_vnet_decap.py:
-  skip:
-    reason: "test_vnet_decap are not ready to run on Cisco-8000 with branch 202411"
-    conditions:
-      - "(asic_type in ['cisco-8000'] and release in ['202411'])"
-
 vxlan/test_vnet_route_leak.py:
   skip:
     reason: "Test skipped due to issue #8374"