Remove breakpoint groups from all disabled themes or uninstalled modules.
array $group_id: Machine readable name of the breakpoint group.
string $source_type: Either Breakpoint::SOURCE_TYPE_THEME or Breakpoint::SOURCE_TYPE_MODULE.
function _breakpoint_delete_breakpoint_groups($group_id, $source_type) {
$breakpoint_groups = entity_load_multiple('breakpoint_group');
foreach ($breakpoint_groups as $breakpoint_group) {
if ($breakpoint_group->sourceType == $source_type && $breakpoint_group->source == $group_id) {
$breakpoint_group
->delete();
}
}
}