src/log.js
function removeFilter (config, filter) {
  if (filter) {
    if (config.filters.ignore[ filter ]) {
      delete config.filters.ignore[ filter ]
    } else {
      delete config.filters.should[ filter ]
    }
  }
}
function removeFilter (config, filter) {
  if (filter) {
    if (config.filters.ignore[ filter ]) {
      delete config.filters.ignore[ filter ]
    } else {
      delete config.filters.should[ filter ]
    }
  }
}
function removeFilter ( config , filter ) { if ( filter ) { if ( config . filters . ignore [ filter ] ) { delete config . filters . ignore [ filter ] } else { delete config . filters . should [ filter ] } } }
remove the regex filter from the correct hash
remove the regex filter from the correct hash