Revert leftovers from 29e929e and b510c75

Moved to branch `task/GH-73-…` as 89ce2c6 and 4ea2e1c respectively.

A.k.a.:

- "(…)Noop: Existing Plugins: Comments, New Lines "
- "(…)Polish Existing Plugins"

Author: wesleyboar

taccsite_cms/contrib/taccsite_sample/cms_plugins.py

@@ -23,14 +23,11 @@ class TaccsiteSamplePlugin(CMSPluginBase):
 
     cache = False
     text_enabled = True
-    allow_children = False
     # NOTE: Use case is unclear
     # admin_preview = True
     # NOTE: To change for all TACC plugins add taccsite_cms/templates/admin/...
     # change_form_template = 'templates/plugin_change_form.html'
     # NOTE: To change field widget and other attribute beyond `models.…Field`
-    #       (Optionally, consider `formfield_overrides`:
-    #        https://django.readthedocs.io/en/latest/ref/contrib/admin/index.html#django.contrib.admin.ModelAdmin.formfield_overrides)
     # form = TaccsiteSamplePluginForm # TODO: Provide example
 
     # FAQ: Sets tooltip of preview of this plugin within a Text plugin
@@ -42,7 +39,6 @@ def icon_alt(self, instance):
     # def icon_src(self, instance)
     # def text_editor_button_icon(...)
 
-    # Render
     def render(self, context, instance, placeholder):
         context = super().render(context, instance, placeholder)
         request = context['request']