Clean unused files, remove need to publish views

[pxpm]

WHY

BEFORE - What was wrong? What was happening before this PR?

We had a lot of unused files. Publishing the views was mandatory.

AFTER - What is happening after this PR?

Unused files were removed from this repo. Views don't need to be published anymore (but they can optionally be)

Is it a breaking change or non-breaking change?

100% breaking, but we are launching a major version, so it should be ok.

If @tabacitu agree with this, I will just write the upgrade guide in the readme.

It should be as simple as removing the published views, if no customization needed, no need to re-publish them. If customizing views is required, republish them again and re-apply the customizations.