remove router transition hook when unmounting
remove router transition hook when unmounting

Transition hook is being added every time the component is mounted so its gets called more and more times with every mount/unmount. Not a big deal in this component since it never unmounts, but a good example to follow for child components that do switch out.
jairoandre/lance-web-hot,TonyJen/react-redux-universal-hot-example,nbuechler/react-redux-universal-hot-example,tpphu/react-pwa,frodereinertsen/react-redux-universal-hot-example,DelvarWorld/some-game,geminiyellow/react-redux-universal-hot-example,brecht/react-redux-universal-hot-example,rammano3/react-redux-universal-hot-example,Shabananana/hot-nav,delwiv/tactill-techtest,sars/appetini-front,mattiasewers/react-redux-universal-hot-example,sejoker/react-redux-universal-hot-example,TallerWebSolutions/react-redux-universal-choko-example,JeremyJonas/react-redux-universal-hot-example,vbdoug/hot-react,leonli/pegasus,coopdevs/katuma-web,ames89/keystone-react-redux,kiyonish/kiyonishimura,AndriyShepitsen/svredux,svsool/react-redux-universal-hot-example,TracklistMe/client-react,lordakshaya/pages,wework/react-redux-universal-hot-example,Trippstan/elephonky,tmbtech/react-redux-universal-hot-example,Smotko/react-redux-universal-hot-example,joshhunt/react-redux-universal-hot-example,hldzlk/wuhao,trungtin/react-redux-universal-hot-example,krolow/react-redux-universal-hot-example,dumbNickname/oasp4js-goes-react,xebia/react-redux-product-list,twomoonsfactory/custom-poll,ThatCheck/AutoLib,namelos/react-redux-universal-hot-example,PhilNorfleet/pBot,CalebEverett/soulpurpose,jeremiahrhall/react-redux-universal-hot-example,mikekidder/react-redux-universal-hot-example,joelburget/pigment,lemonCMS/react-redux-universal-hot-example,thingswesaid/seed,user512/teacher_dashboard,bdefore/universal-redux,jepezi/react-redux-universal-hot-example,sebas5384/react-redux-universal-hot-example,bdefore/universal-redux,micooz/react-redux-universal-hot-example,elbstack/elbstack-hackreact-web-3,dmitrif/react-redux-universal-hot-example,mjhm/react-redux-universal-hot-example,Druddigon/react-redux-learn,AnthonyWhitaker/react-redux-universal-hot-example,delwiv/saphir,MykolaBova/react-redux-universal-hot-example,quicksnap/react-redux-universal-hot-example,jzning-martian/react-redux-universal-hot-example,Widcket/sia,ames89/keystone-react-redux,CarlosMela/react-redux-universal-hot-example,hank7444/react-redux-universal-hot-example,hiEven/HackNTUClient,Romsters/react-redux-universal-hot-example,TribeMedia/react-redux-universal-hot-example,fiTTrail/fiTTrail,coopdevs/katuma-web,andyshora/memory-tools,Xvakin/quiz,brennanerbz/react-redux-universal-hot-example,Iced-Tea/react-redux-universal-hot-example,Dengo/bacon-bacon,alexanderchan/react-redux-universal-hot-example,mscienski/stpauls,nathanielks/universal-redux,nase-skoly/web-app,clintonhalpin/react-redux-universal-hot-example,oToUC/the-scratch,frankleng/react-redux-universal-hot-example,bkniffler/react-redux-universal-hot-example,marclar/react-redux-universal-hot-example,codejunkienick/katakana,thekevinscott/react-redux-universal-starter-kit,bertho-zero/react-redux-universal-hot-example,jxzly229190/react-redux-universal-hot-example,harouf/react-search-portal,w01fgang/react-redux-universal-hot-example,maxcnunes/react-redux-universal-hot-example,sfarthin/youtube-search,nathanielks/universal-redux,korczis/react-redux-universal-hot-example,sylnp0201/react-redux-universal-hot-example,psimyn/react-redux-universal-hot-example,guymorita/creditTiger,knowbody/react-redux-universal-hot-example,rabet/react-redux-universal-hot-example,szhclaye/react-redux-universal-hot-example,lanceharper/react-redux-universal-hot-example,dieface/react-redux-universal-hot-example,trungtin/mP,davidmarkclements/react-redux-universal-hot-example,gbezyuk/react-redux-universal-hot-example,Jimexist/react-redux-universal-hot-example,fforres/coworks,MarkPhillips7/happy-holidays,delwiv/saphir,chrisslater/snapperfish,Widcket/sia,jsdmc/react-redux-universal-hot-example,sunh11373/t648,zangrafx/react-redux-universal-hot-example,astrauka/expensable-r4,hokustalkshow/friend-landing-page,trueter/react-redux-universal-hot-example,zenlambda/react-redux-universal-hot-example,tonykung06/realtime-exchange-rates,yomolify/cc_material,shilu89757/react-redux-universal-hot-example,tpphu/react-pwa,stevoland/react-redux-universal-hot-example,PhilNorfleet/pBot,Cspeisman/react-redux-universal-hot-example,vaseker/react-redux-universal-hot-example,jdbence/react-redux-universal-hot-example,huangc28/palestine-2,justin808/react-redux-universal-hot-example,jmpallot/react-redux-universal-hot-example,reggi/react-shopify-app,cjroebuck/react-redux-universal-hot-example,codejunkienick/katakana,trungtin/mP,holly-juan/react-redux-universal-hot-example,stephenhandley/concertcalendar,oToUC/the-scratch,gihrig/react-redux-universal-hot-example,eastonqiu/frontend,thomastanhb/ericras,arkist/react-redux-universal-hot-example,EnrikoLabriko/react-redux-universal-hot-example,ThatCheck/AutoLib,KeKs0r/evodemo,bazanowsky/react-ssr-exercise,vizidrixfork/react-redux-universal-hot-example,avantcontra/react-redux-custom-starter,TracklistMe/client-web,clkao/react-redux-universal-hot-example,vidaaudrey/avanta,melodylu/react-redux-universal-hot-example,andbet39/reactPress,ptim/react-redux-universal-hot-example,RomanovRoman/react-redux-universal-hot-example,basselAlshK/react-redux-universal-hot-example,prgits/react-product,robertSahm/port,Kronenberg/WebLabsTutorials,Widcket/sia,moje-skoly/web-app,mscienski/stpauls,tanvip/hackPrinceton,sanyamagrawal/royalgeni,hldzlk/wuhao,danieldunderfelt/react-redux-universal-hot-example,erikras/react-redux-universal-hot-example,sseppola/react-redux-universal-hot-example,hitripod/react-redux-universal-hot-example,Widcket/react-boilerplate,biversen21/DocuPact_Hackathon,connyay/react-redux-universal-hot-example,ipbrennan90/movesort-app,ali/react-redux-universal-hot-example,lencioni/react-redux-universal-hot-example,ercangursoy/react-dev,DenisPostu/react-redux-universal-hot-example,danieloliveira079/healthy-life-app,kievechua/react-redux-universal-hot-example,daviferreira/react-redux-universal-hot-example,sslash/FINN.no-academy-demo,SWTPAIN/react-redux-universal-hot-example,eiriklv/react-redux-universal-hot-example,bdefore/react-redux-universal-hot-example,runnables/react-redux-universal-hot-example,mull/require_hacker_error_reproduction