Don't run benchmark tests in CI to avoid error

[hsluoyz]

See: https://github.com/casbin/casbin-cpp/runs/3990335532?check_suite_focus=true

We should not run benchmark tests in CI, because it takes too long time and CI will kill the process. People can run them in their local machine by themselves.

Can anyone remove it?

[casbin-bot]

@EmperorYP7 @divy9881 @noob20000405 @sheny1xuan

[EmperorYP7]

People can run them in their local machine by themselves.

I think we can use some alternatives for consistent benchmarking. We should also keep track of it whenever new code is pushed or a new PR is made to the project.

Can anyone remove it?

Sure!

[hsluoyz]

@sheny1xuan @noob20000405 can you try the alternative solutions?

[noob20000405]

@sheny1xuan @noob20000405 can you try the alternative solutions?

Sure! I'll do it latter