remove solidity slider

src/ui/SoliditySlider.js

-'use strict'
-var Slider = require('./Slider')
-var utils = require('../helpers/util.js')
-
-class SoliditySlider extends Slider {
-  constructor (_traceManager) {
-    super(_traceManager)
-    this.reducedTraceBySourceLocation
-  }
-  setValue (_value) {
-    if (this.reducedTraceBySourceLocation) {
-      super.setValue(utils.findLowerBound(_value, this.reducedTraceBySourceLocation))
-    }
-  }
-  setReducedTrace (_reducedTraceBySourceLocation) {
-    super.init(_reducedTraceBySourceLocation.length)
-    this.reducedTraceBySourceLocation = _reducedTraceBySourceLocation
-  }
-}
-
-module.exports = SoliditySlider