code: function removeNamespace(key, themeNamespace) {
    const capitalized = key.substr(themeNamespace.length)
    return capitalized.slice(0, 1).toLowerCase() + capitalized.slice(1)
  }
docs: Removes namespace from key
  
  @param {String} key - Key
  @param {String} themeNamespace - Theme namespace
  @returns {String} - Key