Revert "Skip test_gnmi_configdb_full_01 to fix test issue. (sonic-net#7251)" (sonic-net#7347)

This reverts commit 4dfec81.

What is the motivation for this PR?
The fix for config reload issue is merged to sonic-buildimage, so we can enable gnmi test.
sonic-net/sonic-buildimage#13333

How did you do it?
Update conditional mark.

How did you verify/test it?
Run GNMI e2e test.

Author: ganglyu

tests/common/plugins/conditional_mark/tests_mark_conditions.yaml

@@ -375,10 +375,6 @@ generic_config_updater/test_incremental_qos.py::test_incremental_qos_config_upda
     conditions:
       - "not any(i in hwsku for i in ['2700', 'Arista-7170-64C', 'montara', 'newport'])"
 
-gnmi/test_gnmi_configdb.py::test_gnmi_configdb_full_01:
-  skip:
-    reason: "We still have issue for config reload command, and we will enable this test after merging the fix."
-
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