Remove `Publish with beta tag` step on `publish.yml`

[alallema]

The publish.yml file is supposed to publish the version on NPM after doing some checks.
For the first version, we wanted to give ourselves the possibility to publish a beta in case of problems.
In the end, we don't use this beta step so we can remove it from this file.

[bidoubiwa]

After discussion, we are keeping the possibility to create a beta version. Closing this issue