util: Remove probably misleading TODO
util: Remove probably misleading TODO

The TODO has been added by me, but I don't remember how to solve it. The
current code works fine, so just remove the TODO.

pstratem/bitcoin,kallewoof/bitcoin,particl/particl-core,prusnak/bitcoin,rnicoll/bitcoin,MarcoFalke/bitcoin,Xekyo/bitcoin,mruddy/bitcoin,rnicoll/bitcoin,bitcoinsSG/bitcoin,AkioNak/bitcoin,ajtowns/bitcoin,lateminer/bitcoin,EthanHeilman/bitcoin,GroestlCoin/bitcoin,dscotese/bitcoin,GroestlCoin/bitcoin,jamesob/bitcoin,namecoin/namecoin-core,prusnak/bitcoin,sstone/bitcoin,bitcoinsSG/bitcoin,rnicoll/bitcoin,ElementsProject/elements,JeremyRubin/bitcoin,fanquake/bitcoin,fanquake/bitcoin,MeshCollider/bitcoin,pataquets/namecoin-core,pataquets/namecoin-core,qtumproject/qtum,fujicoin/fujicoin,EthanHeilman/bitcoin,ElementsProject/elements,apoelstra/bitcoin,kallewoof/bitcoin,pstratem/bitcoin,domob1812/bitcoin,cdecker/bitcoin,bitcoin/bitcoin,instagibbs/bitcoin,jlopp/statoshi,rnicoll/bitcoin,Sjors/bitcoin,sstone/bitcoin,yenliangl/bitcoin,GroestlCoin/GroestlCoin,pataquets/namecoin-core,ElementsProject/elements,namecoin/namecore,GroestlCoin/GroestlCoin,qtumproject/qtum,andreaskern/bitcoin,n1bor/bitcoin,JeremyRubin/bitcoin,AkioNak/bitcoin,GroestlCoin/bitcoin,particl/particl-core,MarcoFalke/bitcoin,GroestlCoin/bitcoin,instagibbs/bitcoin,AkioNak/bitcoin,bitcoin/bitcoin,instagibbs/bitcoin,n1bor/bitcoin,MarcoFalke/bitcoin,practicalswift/bitcoin,practicalswift/bitcoin,namecoin/namecoin-core,domob1812/namecore,anditto/bitcoin,MarcoFalke/bitcoin,achow101/bitcoin,practicalswift/bitcoin,namecoin/namecoin-core,cdecker/bitcoin,sstone/bitcoin,MarcoFalke/bitcoin,jlopp/statoshi,MeshCollider/bitcoin,cdecker/bitcoin,dscotese/bitcoin,domob1812/namecore,tecnovert/particl-core,kallewoof/bitcoin,fanquake/bitcoin,andreaskern/bitcoin,prusnak/bitcoin,pstratem/bitcoin,qtumproject/qtum,lateminer/bitcoin,jamesob/bitcoin,jlopp/statoshi,fujicoin/fujicoin,namecoin/namecore,achow101/bitcoin,jamesob/bitcoin,rnicoll/bitcoin,kallewoof/bitcoin,bitcoinsSG/bitcoin,achow101/bitcoin,apoelstra/bitcoin,mruddy/bitcoin,apoelstra/bitcoin,lateminer/bitcoin,mm-s/bitcoin,pstratem/bitcoin,JeremyRubin/bitcoin,lateminer/bitcoin,kallewoof/bitcoin,rnicoll/bitcoin,dscotese/bitcoin,apoelstra/bitcoin,cdecker/bitcoin,cdecker/bitcoin,domob1812/bitcoin,jamesob/bitcoin,bitcoinknots/bitcoin,practicalswift/bitcoin,sipsorcery/bitcoin,bitcoin/bitcoin,bitcoinknots/bitcoin,jlopp/statoshi,EthanHeilman/bitcoin,mruddy/bitcoin,jlopp/statoshi,domob1812/namecore,mruddy/bitcoin,JeremyRubin/bitcoin,namecoin/namecoin-core,sipsorcery/bitcoin,yenliangl/bitcoin,ElementsProject/elements,jambolo/bitcoin,lateminer/bitcoin,jamesob/bitcoin,ajtowns/bitcoin,sipsorcery/bitcoin,yenliangl/bitcoin,pstratem/bitcoin,mruddy/bitcoin,Xekyo/bitcoin,Sjors/bitcoin,n1bor/bitcoin,Xekyo/bitcoin,MeshCollider/bitcoin,Sjors/bitcoin,achow101/bitcoin,n1bor/bitcoin,pataquets/namecoin-core,namecoin/namecore,ajtowns/bitcoin,anditto/bitcoin,domob1812/namecore,tecnovert/particl-core,fanquake/bitcoin,prusnak/bitcoin,bitcoinsSG/bitcoin,tecnovert/particl-core,pstratem/bitcoin,bitcoinknots/bitcoin,domob1812/bitcoin,achow101/bitcoin,sipsorcery/bitcoin,jnewbery/bitcoin,domob1812/namecore,EthanHeilman/bitcoin,ajtowns/bitcoin,domob1812/namecore,bitcoin/bitcoin,jnewbery/bitcoin,n1bor/bitcoin,instagibbs/bitcoin,fujicoin/fujicoin,achow101/bitcoin,JeremyRubin/bitcoin,fujicoin/fujicoin,anditto/bitcoin,namecoin/namecore,sstone/bitcoin,Xekyo/bitcoin,particl/particl-core,dscotese/bitcoin,andreaskern/bitcoin,fujicoin/fujicoin,Sjors/bitcoin,EthanHeilman/bitcoin,Xekyo/bitcoin,tecnovert/particl-core,qtumproject/qtum,jambolo/bitcoin,Sjors/bitcoin,jamesob/bitcoin,domob1812/bitcoin,bitcoinknots/bitcoin,anditto/bitcoin,MeshCollider/bitcoin,dscotese/bitcoin,prusnak/bitcoin,particl/particl-core,GroestlCoin/GroestlCoin,bitcoinsSG/bitcoin,fanquake/bitcoin,AkioNak/bitcoin,AkioNak/bitcoin,andreaskern/bitcoin,yenliangl/bitcoin,sstone/bitcoin,namecoin/namecoin-core,domob1812/bitcoin,mm-s/bitcoin,sstone/bitcoin,GroestlCoin/GroestlCoin,tecnovert/particl-core,MeshCollider/bitcoin,kallewoof/bitcoin,fanquake/bitcoin,GroestlCoin/bitcoin,practicalswift/bitcoin,jambolo/bitcoin,dscotese/bitcoin,jambolo/bitcoin,prusnak/bitcoin,particl/particl-core,MarcoFalke/bitcoin,GroestlCoin/bitcoin,apoelstra/bitcoin,anditto/bitcoin,jlopp/statoshi,bitcoin/bitcoin,jnewbery/bitcoin,namecoin/namecore,pataquets/namecoin-core,instagibbs/bitcoin,pataquets/namecoin-core,namecoin/namecoin-core,andreaskern/bitcoin,yenliangl/bitcoin,qtumproject/qtum,AkioNak/bitcoin,practicalswift/bitcoin,jambolo/bitcoin,Xekyo/bitcoin,mm-s/bitcoin,GroestlCoin/GroestlCoin,sipsorcery/bitcoin,particl/particl-core,mm-s/bitcoin,qtumproject/qtum,andreaskern/bitcoin,yenliangl/bitcoin,namecoin/namecore,tecnovert/particl-core,lateminer/bitcoin,fujicoin/fujicoin,domob1812/bitcoin,bitcoinsSG/bitcoin,ajtowns/bitcoin,n1bor/bitcoin,jambolo/bitcoin,GroestlCoin/GroestlCoin,mm-s/bitcoin,sipsorcery/bitcoin,ElementsProject/elements,ajtowns/bitcoin,jnewbery/bitcoin,EthanHeilman/bitcoin,MeshCollider/bitcoin,JeremyRubin/bitcoin,mm-s/bitcoin,apoelstra/bitcoin,qtumproject/qtum,bitcoinknots/bitcoin,bitcoin/bitcoin,anditto/bitcoin,ElementsProject/elements,mruddy/bitcoin,cdecker/bitcoin,instagibbs/bitcoin,jnewbery/bitcoin