[action] [PR:3118] [ACL] Remove flex counter when updating ACL rule (#3118) #3119
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What I did
This PR is to fix sonic-net/sonic-buildimage#18719
When ACL rule is created for the first time, a flex counter is created and registered. When the same ACL rule is being updated, the FlexCounter created before is not removed, and another FlexCounter is created and registered.
Why I did it
Fix the issue that FlexCounter is duplicated when updating existing ACL rule.