Remove xfail marker of ecmp/test_ecmp_sai_value.py (#13538)

What is the motivation for this PR?
After sonic-net/sonic-swss#3138, configure hash_offset along with hash_seed attribute is enabled on 202311 onwards on Broadcom T1 platfrom.

How did you do it?
Remove the xfail marker of ecmp/test_ecmp_sai_value.py

How did you verify/test it?
Run ecmp/test_ecmp_sai_values.py on 7260 T1 DUT and passed.
https://dev.azure.com/mssonic/internal/_build/results?buildId=586225&view=results

Signed-off-by: zitingguo-ms <zitingguo@microsoft.com>

tests/common/plugins/conditional_mark/tests_mark_conditions.yaml

@@ -524,19 +524,14 @@ ecmp/inner_hashing/test_wr_inner_hashing_lag.py:
 
 ecmp/test_ecmp_sai_value.py:
   skip:
-    reason: "Only support Broadcom T1/T0 topology with 20230531 image, 7050cx3 T1 doesn't enable this feature"
+    reason: "Only support Broadcom T1/T0 topology with 20230531 and above image, 7050cx3 T1 doesn't enable this feature"
     conditions_logical_operator: or
     conditions:
       - "topo_type not in ['t1', 't0']"
       - "asic_type not in ['broadcom']"
       - "release in ['201911', '202012', '202205', '202211', 'master']"
       - "'internal' in build_version"
       - "topo_type in ['t1'] and hwsku in ['Arista-7050CX3-32S-C32']"
-  xfail:
-    reason: "This feature is not supported in 202311 as the code was not merged into 202311"
-    conditions:
-      - "release in ['202311']"
-      - https://github.com/sonic-net/sonic-mgmt/issues/11310
 
 ecmp/test_fgnhg.py:
   skip: