Remove old non-existant copyright file from extra-source-files We only have one LICENCE file
Remove old non-existant copyright file from extra-source-files
We only have one LICENCE file

mightybyte/cabal,themoritz/cabal,plumlife/cabal,martinvlk/cabal,sopvop/cabal,anton-dessiatov/cabal,themoritz/cabal,plow-technologies/cabal,kolmodin/cabal,corngood/cabal,fpco/cabal,headprogrammingczar/cabal,thomie/cabal,garetxe/cabal,sopvop/cabal,themoritz/cabal,kosmikus/cabal,eric-stanley/cabal,rimmington/cabal,fugyk/cabal,corngood/cabal,enolan/cabal,kosmikus/cabal,alphaHeavy/cabal,typelead/epm,triplepointfive/cabal,eric-stanley/cabal,ian-ross/cabal,edsko/cabal,ian-ross/cabal,beni55/cabal,edsko/cabal,typelead/epm,gridaphobe/cabal,anton-dessiatov/cabal,sopvop/cabal,x-y-z/cabal,triplepointfive/cabal,thoughtpolice/cabal,christiaanb/cabal,valderman/cabal,trskop/cabal,thoughtpolice/cabal,bennofs/cabal,garetxe/cabal,seereason/cabal,mightybyte/cabal,lukexi/cabal,gbaz/cabal,mydaum/cabal,lukexi/cabal,trskop/cabal,bennofs/cabal,enolan/cabal,kolmodin/cabal,randen/cabal,alphaHeavy/cabal,Helkafen/cabal,christiaanb/cabal,mmakowski/cabal,beni55/cabal,x-y-z/cabal,rimmington/cabal,valderman/cabal,seereason/cabal,mydaum/cabal,ghc-android/cabal,Peaker/cabal,Heather/cabal,thomie/cabal,gbaz/cabal,plow-technologies/cabal,martinvlk/cabal,headprogrammingczar/cabal,Helkafen/cabal,fugyk/cabal,mmakowski/cabal,ghc-android/cabal,gridaphobe/cabal,fpco/cabal,randen/cabal,Peaker/cabal,plumlife/cabal,Heather/cabal