Delete unused GasSlider component (#7508)

ui/app/components/app/customize-gas-modal/gas-slider.js

@@ -1,50 +0,0 @@
-// const Component = require('react').Component
-// const h = require('react-hyperscript')
-// const inherits = require('util').inherits
-
-// module.exports = GasSlider
-
-// inherits(GasSlider, Component)
-// function GasSlider () {
-//   Component.call(this)
-// }
-
-// GasSlider.prototype.render = function () {
-//   const {
-//     memo,
-//     identities,
-//     onChange,
-//     unitLabel,
-//     value,
-//     id,
-//     step,
-//     max,
-//     min,
-//   } = this.props
-
-//   return h('div.gas-slider', [
-
-//     h('input.gas-slider__input', {
-//       type: 'range',
-//       step,
-//       max,
-//       min,
-//       value,
-//       id: 'gasSlider',
-//       onChange: event => onChange(event.target.value),
-//     }, []),
-
-//     h('div.gas-slider__bar', [
-
-//       h('div.gas-slider__low'),
-
-//       h('div.gas-slider__mid'),
-
-//       h('div.gas-slider__high'),
-
-//     ]),
-
-//   ])
-
-// }
-