IOS-XR: remove unnecessary lines from get_config output

[mirceaulinic]

No description provided.

[coveralls]

Coverage remained the same at 0.0% when pulling 499f95d on iosxr-cfg-filter into 9731790 on develop.

[ktbyers]

@mirceaulinic Do we want to get rid of this one also?

!! Last configuration change at Wed Aug 17 16:49:00 2016 by vagrant

I see it in the test data.

[mirceaulinic]

On Fri, 1 May 2020, 17:57 Kirk Byers, ***@***.***> wrote: @mirceaulinic <https://github.com/mirceaulinic> Do we want to get rid of this one also? !! Last configuration change at Wed Aug 17 16:49:00 2016 by vagrant I see it in the test data.

Yes, I think that is fine to stay - it's commented so it should be ignored when loaded, while in a backup system that line only changes when there are other changes (so other lines are likely going to be changed as well) - and in fact it gives information on who changed the config.