text: const memoryCache = require('./memory_cache');
  
  /** Delete a value from the memory cache
  
    {
      key: <Scoped Key String>
    }
  */
  module.exports = ({key}, cbk) => {
    if (!key) {
      return cbk([400, 'ExpectedKey']);
    }
  
    const cache = memoryCache({});
  
    cache.del(key);
  
    return cbk();
  };
  