refactor(AdvancedOptions): Remove dead code

lib/components/form/call-taker/advanced-options.js

@@ -1,6 +1,4 @@
 /* eslint-disable react/prop-types */
-// FIXME: Remove the following eslint rule exception.
-/* eslint-disable jsx-a11y/label-has-for */
 import * as TripFormClasses from '@opentripplanner/trip-form/lib/styled'
 import { checkIfModeSettingApplies } from '@opentripplanner/trip-form/lib/MetroModeSelector/utils'
 import { injectIntl } from 'react-intl'
@@ -9,7 +7,6 @@ import {
   populateSettingWithValue,
   SubmodeSelector
 } from '@opentripplanner/trip-form'
-import isEmpty from 'lodash.isempty'
 import React, { Component, lazy, Suspense } from 'react'
 import styled from 'styled-components'
 
@@ -43,9 +40,6 @@ export const StyledSubmodeSelector = styled(SubmodeSelector)`
   margin: 5px 0;
 `
 
-const metersToMiles = (meters) => Math.round(meters * 0.000621371 * 100) / 100
-const milesToMeters = (miles) => miles / 0.000621371
-
 /**
  * Converts a new TransportMode object to legacy style underscore qualifier
  */
@@ -80,7 +74,7 @@ class AdvancedOptions extends Component {
     this.props.findRoutesIfNeeded()
   }
 
-  componentDidUpdate(prevProps) {
+  componentDidUpdate() {
     const { routes } = this.props
     // Once routes are available, map them to the route options format.
     const routeOptions = Object.values(routes).map(this.routeToOption)
@@ -113,17 +107,6 @@ class AdvancedOptions extends Component {
     return bannedRoutes && bannedRoutes.find((o) => o.value === option.value)
   }
 
-  getDistanceStep = (distanceInMeters) => {
-    // Determine step for max walk/bike based on current value. Increment by a
-    // quarter mile if dealing with small values, whatever number will round off
-    // the number if it is not an integer, or default to one mile.
-    return metersToMiles(distanceInMeters) <= 2
-      ? '.25'
-      : metersToMiles(distanceInMeters) % 1 !== 0
-      ? `${metersToMiles(distanceInMeters) % 1}`
-      : '1'
-  }
-
   _onSubModeChange = (changedMode) => {
     // Get previous transit modes from state and all modes from query.
     const transitModes = [...this.state.transitModes]