do not remove merge requests when fork project destroyed
do not remove merge requests when fork project destroyed

Signed-off-by: Dmitriy Zaporozhets <be23d75b156792e5acab51b196a2deb155d35d6a@gmail.com>

cncodog/gitlab,bbodenmiller/gitlabhq,fpgentil/gitlabhq,icedwater/gitlabhq,fgbreel/gitlabhq,ferdinandrosario/gitlabhq,liyakun/gitlabhq,fpgentil/gitlabhq,nguyen-tien-mulodo/gitlabhq,yama07/gitlabhq,allistera/gitlabhq,revaret/gitlabhq,dvrylc/gitlabhq,t-zuehlsdorff/gitlabhq,LytayTOUCH/gitlabhq,pkallberg/tjenare,dplarson/gitlabhq,hq804116393/gitlabhq,darkrasid/gitlabhq,youprofit/gitlabhq,Soullivaneuh/gitlabhq,akumetsuv/gitlab,tempbottle/gitlabhq,kemenaran/gitlabhq,Devin001/gitlabhq,Keystion/gitlabhq,salipro4ever/gitlabhq,folpindo/gitlabhq,zBMNForks/gitlabhq,it33/gitlabhq,mr-dxdy/gitlabhq,ferdinandrosario/gitlabhq,Telekom-PD/gitlabhq,DanielZhangQingLong/gitlabhq,yulchitaj/TEST3,dreampet/gitlab,gopeter/gitlabhq,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,delkyd/gitlabhq,sonalkr132/gitlabhq,stanhu/gitlabhq,OtkurBiz/gitlabhq,michaKFromParis/gitlabhqold,zrbsprite/gitlabhq,julianengel/gitlabhq,cncodog/gitlab,shinexiao/gitlabhq,duduribeiro/gitlabhq,sue445/gitlabhq,Razer6/gitlabhq,koreamic/gitlabhq,michaKFromParis/gitlabhqold,bbodenmiller/gitlabhq,whluwit/gitlabhq,michaKFromParis/gitlabhq,yfaizal/gitlabhq,jrjang/gitlab-ce,williamherry/gitlabhq,hq804116393/gitlabhq,SkyWei/gitlabhq,rumpelsepp/gitlabhq,stoplightio/gitlabhq,pkgr/gitlabhq,nmav/gitlabhq,sonalkr132/gitlabhq,axilleas/gitlabhq,MauriceMohlek/gitlabhq,SVArago/gitlabhq,martinma4/gitlabhq,mr-dxdy/gitlabhq,mathstuf/gitlabhq,jaepyoung/gitlabhq,nmav/gitlabhq,yama07/gitlabhq,flashbuckets/gitlabhq,OlegGirko/gitlab-ce,joalmeid/gitlabhq,initiummedia/gitlabhq,jrjang/gitlabhq,8thcolor/testing-public-gitlabhq,LytayTOUCH/gitlabhq,rfeese/gitlab-ce,fgbreel/gitlabhq,Kambda/mobbr-gitlabhq,michaKFromParis/gitlabhqold,julianengel/gitlabhq,yonglehou/gitlabhq,ttasanen/gitlabhq,chadyred/gitlabhq,Soullivaneuh/gitlabhq,pjknkda/gitlabhq,jrjang/gitlab-ce,dplarson/gitlabhq,ordiychen/gitlabhq,Devin001/gitlabhq,szechyjs/gitlabhq,larryli/gitlabhq,OlegGirko/gitlab-ce,Burick/gitlabhq,kotaro-dev/gitlab-6-9,jirutka/gitlabhq,mmkassem/gitlabhq,xuvw/gitlabhq,wangcan2014/gitlabhq,manfer/gitlabhq,pkgr/gitlabhq,johnmyqin/gitlabhq,ayufan/gitlabhq,mr-dxdy/gitlabhq,chenrui2014/gitlabhq,joalmeid/gitlabhq,bozaro/gitlabhq,jaepyoung/gitlabhq,axilleas/gitlabhq,ksoichiro/gitlabhq,childbamboo/gitlabhq,liyakun/gitlabhq,nguyen-tien-mulodo/gitlabhq,rhels/gitlabhq,gopeter/gitlabhq,gorgee/gitlabhq,revaret/gitlabhq,yulchitaj/TEST3,hzy001/gitlabhq,icedwater/gitlabhq,louahola/gitlabhq,johnmyqin/gitlabhq,screenpages/gitlabhq,pkgr/gitlabhq,ngpestelos/gitlabhq,screenpages/gitlabhq,flashbuckets/gitlabhq,ttasanen/gitlabhq,louahola/gitlabhq,pulkit21/gitlabhq,kemenaran/gitlabhq,flashbuckets/gitlabhq,delkyd/gitlabhq,dukex/gitlabhq,windymid/test2,fgbreel/gitlabhq,vjustov/gitlabhq,bozaro/gitlabhq,dwrensha/gitlabhq,martijnvermaat/gitlabhq,mavimo/gitlabhq,rebecamendez/gitlabhq,sonalkr132/gitlabhq,martinma4/gitlabhq,darkrasid/gitlabhq,123Haynes/gitlabhq,k4zzk/gitlabhq,dreampet/gitlab,rumpelsepp/gitlabhq,mavimo/gitlabhq,Devin001/gitlabhq,kemenaran/gitlabhq,Datacom/gitlabhq,tim-hoff/gitlabhq,louahola/gitlabhq,Tyrael/gitlabhq,ikappas/gitlabhq,mr-dxdy/gitlabhq,jairzh/gitlabhq-sfdc,eliasp/gitlabhq,eliasp/gitlabhq,per-garden/gitlabhq,revaret/gitlabhq,Tyrael/gitlabhq,williamherry/gitlabhq,k4zzk/gitlabhq,stellamiranda/mobbr-gitlabhq,pulkit21/gitlabhq,rumpelsepp/gitlabhq,fscherwi/gitlabhq,chadyred/gitlabhq,youprofit/gitlabhq,fantasywind/gitlabhq,TheWatcher/gitlabhq,yuyue2013/ss,openwide-java/gitlabhq,pulkit21/gitlabhq,shinexiao/gitlabhq,ngpestelos/gitlabhq,NuLL3rr0r/gitlabhq,sakishum/gitlabhq,wangcan2014/gitlabhq,youprofit/gitlabhq,theonlydoo/gitlabhq,delkyd/gitlabhq,mmkassem/gitlabhq,Datacom/gitlabhq,fantasywind/gitlabhq,OlegGirko/gitlab-ce,chadyred/gitlabhq,ikappas/gitlabhq,fpgentil/gitlabhq,Razer6/gitlabhq,dreampet/gitlab,Telekom-PD/gitlabhq,screenpages/gitlabhq,tempbottle/gitlabhq,jairzh/gitlabhq-sfdc,cui-liqiang/gitlab-ce,LytayTOUCH/gitlabhq,lvfeng1130/gitlabhq,daiyu/gitlab-zh,larryli/gitlabhq,bladealslayer/gitlabhq,jvanbaarsen/gitlabhq,bozaro/gitlabhq,liyakun/gitlabhq,cncodog/gitlab,atomaka/gitlabhq,jvanbaarsen/gitlabhq,Soullivaneuh/gitlabhq,ksoichiro/gitlabhq,hzy001/gitlabhq,jrjang/gitlab-ce,cinderblock/gitlabhq,ngpestelos/gitlabhq,rhels/gitlabhq,iiet/iiet-git,martinma4/gitlabhq,NKMR6194/gitlabhq,folpindo/gitlabhq,ikappas/gitlabhq,since2014/gitlabhq,SVArago/gitlabhq,ttasanen/gitlabhq,Datacom/gitlabhq,xuvw/gitlabhq,whluwit/gitlabhq,123Haynes/gitlabhq,rhels/gitlabhq,cui-liqiang/gitlab-ce,screenpages/gitlabhq,MauriceMohlek/gitlabhq,openwide-java/gitlabhq,jvanbaarsen/gitlabhq,koreamic/gitlabhq,childbamboo/gitlabhq,szechyjs/gitlabhq,tim-hoff/gitlabhq,8thcolor/testing-public-gitlabhq,pkallberg/tjenare,rhels/gitlabhq,childbamboo/gitlabhq,atomaka/gitlabhq,WSDC-NITWarangal/gitlabhq,rebecamendez/gitlabhq,it33/gitlabhq,yonglehou/gitlabhq,since2014/gitlabhq,whluwit/gitlabhq,yfaizal/gitlabhq,DanielZhangQingLong/gitlabhq,stoplightio/gitlabhq,liyakun/gitlabhq,Kambda/mobbr-gitlabhq,gorgee/gitlabhq,bbodenmiller/gitlabhq,ferdinandrosario/gitlabhq,martinma4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