🗑️ Template: Remove id from myst.yml

The automatically generated `myst.yml` file contains an `id` key in the project
frontmatter. Since this is supposed to be a unique identifier, it clearly shouldn't
be a part of the template.

Author: mbercx

template/docs/{% if docs == 'myst' %}myst.yml{% endif %}.jinja

@@ -1,7 +1,6 @@
 # See docs at: https://mystmd.org/guide/frontmatter
 version: 1
 project:
-  id: a557e2e8-77c6-4b93-96eb-a33e837935d4
   title: {{ package_name }}
   description: {{ description }}
   # keywords: []