housekeeping: remove react-addons-perf dependency (via #5229)

* Remove react-addons-perf dependency

* update lockfile

* include ReactPerf in non-production builds

src/core/components/debug.jsx

@@ -2,7 +2,6 @@ import React from "react"
 import PropTypes from "prop-types"
 import { presets } from "react-motion"
 import ObjectInspector from "react-inspector"
-import Perf from "react-addons-perf"
 
 export default class Debug extends React.Component {
 
@@ -15,7 +14,6 @@ export default class Debug extends React.Component {
       e.preventDefault()
       this.setState({jsonDumpOpen: !this.state.jsonDumpOpen})
     }
-    window.Perf = Perf
   }
 
   plusOrMinus(bool) {
@@ -51,4 +49,3 @@ Debug.propTypes = {
   getState: PropTypes.func.isRequired,
   getComponent: PropTypes.func.isRequired,
 }
-