inclusion of gtest in this package

### Comment:

It appears that this package includes `gtest` in its installation. I see that the `yaml-cpp` project does have `gtest` in its repo, but wonder if it is necessary/appropriate/best practice to include it as part of the installed package.

I raise this question because our project recently encountered a version compatibility problem when the `gtest` headers installed by `yaml-cpp` were conflicting with the version of `gtest` that we use.

I think we have an immediate solution on our end, but I'm not really sure if this packaging should be modified or not?

Review the yaml-cpp feedstock packaging and determine why gtest is included in the installed package. Compare the resulting gtest headers with the project's dependency requirements; done means deciding whether gtest should be shipped and preventing the conflicting headers if it should not be.

Written by the indexing model from the issue text.