Reword "Remove kernels..." to "Remove inactive kernels"

[AndreiMiculita]

Is your feature request related to a problem? Please describe.
When managing installed kernels, it's unclear what the "Remove kernels" button will do.

In fact what it will do is select all kernels that are Installed and Not Active and offer to remove them:

Describe the solution you'd like
It should be made more obvious what the button does. Either rename it to "Remove inactive kernels" or "Remove old kernels" would make it a lot clearer. The latter is not exactly accurate since I assume it will remove kernels newer than the active one if installed.