remove micronaut-micronaut- duplication

[sdelamo]

When standardized project names are in used, binary compatibility checks fail because the micronaut- prefix is added to the artifact id, resulting in a double micronaut-micronaut- prefix.

It seems the solution proposed #521 has some drawbacks
@melix what do you think about going this simpler route?

[melix]

This will not work. This is actually half of the fix I implemented, except that I used the moduleNameOf method for deduplicating. The problem is that once you have fixed that deduplication, it surfaces a bug in Gradle where you cannot resolve, within the same project, a configuration which contains a binary dependency on the same project (same GAV coordinates). Hence my fix instead.