Remove bok-choy reference (#34216)

* chore: remove bok-choy references

xmodule/assets/library_content/public/js/library_content_edit.js

@@ -7,8 +7,6 @@ window.LibraryContentAuthorView = function(runtime, element) {
     // But it is still inside this xblock's wrapper element, which we can easily find:
     var $wrapper = $element.parents('*[data-locator="' + usage_id + '"]');
 
-    // We can't bind to the button itself because in the bok choy test environment,
-    // it may not yet exist at this point in time... not sure why.
     $wrapper.on('click', '.library-update-btn', function(e) {
         e.preventDefault();
         // Update the XBlock with the latest matching content from the library:

xmodule/library_content_block.py

@@ -500,7 +500,6 @@ class LibraryContentBlock(
         """
         user_service = self.runtime.service(self, 'user')
         if user_service:
-            # May be None when creating bok choy test fixtures
             user_id = user_service.get_current_user().opt_attrs.get('edx-platform.user_id', None)
         else:
             user_id = None