Allow to remove a component from a published repository

[cfiehe]

Detailed Description

Besides the capability to add a component to a published repository, it would be useful if one or multiple components could be removed from a published repository, too.

Context

Currently, it is only possible to drop the published repository as a whole and recreate it without the components you want to be absent. This causes unnecessary overhead. The main problem is that the methods, which are available for a published repository, cannot be extended without changing the method's semantics: update and switch are only applicable on local repositories or snapshots. drop is a destructive method and removes the whole published repository.

Possible Implementation

It would be best to introduce a new method and extend the publish CLI. Analogous to the remove method of a local repository, which removes packages, we can implement a remove method for a published repository, which removes components. In both cases the remove method removes packages from the corresponding target.