Clean up some unused debug code in gfx/font.rs.
Clean up some unused debug code in gfx/font.rs.

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andeephegde/servo,tafia/servo,fiji-flo/servo,jdramani/servo,evilpie/servo,bhearsum-bors/servo,evilpie/servo,Adenilson/prototype-viewing-distance,mrobinson/servo,codemac/servo,wartman4404/servo,dati91/servo,dvberkel/servo,saneyuki/servo,pyfisch/servo,AnthonyBroadCrawford/servo,vks/servo,akosel/servo,jlegendary/servo,dvberkel/servo,tempbottle/servo,evilpie/servo,Aalhad/CanvasRenderingContext2DMozilla,pyecs/servo,larsbergstrom/servo,canaltinova/servo,larsbergstrom/servo,huonw/servo,boghison/servo,ConnorGBrewster/servo,froydnj/servo,dvberkel/servo,bjwbell/servo,larsbergstrom/servo,deokjinkim/servo,ruud-v-a/servo,DominoTree/servo,saratang/servo,szeged/servo,mattnenterprise/servo,zentner-kyle/servo,Aalhad/CanvasRenderingContext2DMozilla,RenaudParis/servo,akosel/servo,SimonSapin/servo,jgraham/servo,GreenRecycleBin/servo,bhearsum-bors/servo,luniv/servo,paulrouget/servo,wartman4404/servo,szeged/servo,rnestler/servo,saratang/servo,srbhklkrn/SERVOENGINE,nerith/servo,dmarcos/servo,rixrix/servo,peterjoel/servo,juzer10/servo,bfrohs/servo,rnestler/servo,snf/servo,nerith/servo,dsandeephegde/servo,sadmansk/servo,GreenRecycleBin/servo,avadacatavra/servo,s142857/servo,mattnenterprise/servo,michaelwu/servo,samfoo/servo,rnestler/servo,jgraham/servo,hyowon/servo,pyecs/servo,zentner-kyle/servo,caldwell/servo,s142857/servo,fiji-flo/servo,indykish/servo,j3parker/servo,wartman4404/servo,mbrubeck/servo,seanmonstar/servo,szeged/servo,luniv/servo,luniv/servo,peterjoel/servo,Adenilson/prototype-viewing-distance,walac/servo,pgonda/servo,huonw/servo,kindersung/servo,ruud-v-a/servo,ConnorGBrewster/servo,rixrix/servo,rentongzhang/servo,pyfisch/servo,shrenikgala/servo,notriddle/servo,upsuper/servo,aidanhs/servo,tschneidereit/servo,j3parker/servo,brson/servo,juzer10/servo,splav/servo,mbrubeck/servo,CJ8664/servo,pgonda/servo,samfoo/servo,saneyuki/servo,snf/servo,dagnir/servo,jimberlage/servo,akosel/servo,deokjinkim/servo,mdibaiee/servo,brson/servo,steveklabnik/servo,dmarcos/servo,srbhklkrn/SERVOENGINE,mukilan/servo,paulrouget/servo,saratang/servo,brendandahl/servo,WriterOfAlicrow/servo,ruud-v-a/servo,meh/servo,notriddle/servo,jdramani/servo,ruud-v-a/servo,tschneidereit/servo,avadacatavra/servo,codemac/servo,tempbottle/servo,DominoTree/servo,seanmonstar/servo,Aalhad/CanvasRenderingContext2DMozilla,rnestler/servo,bjwbell/servo,splav/servo,paulrouget/servo,aweinstock314/servo,fiji-flo/servo,tempbottle/servo,peterjoel/servo,dati91/servo,boghison/servo,saratang/servo,kindersung/servo,mukilan/servo,kindersung/servo,jimberlage/servo,zhangjunlei26/servo,owaspjocur/servo,A-deLuna/servo,avadacatavra/servo,dsandeephegde/servo,tschneidereit/servo,GyrosOfWar/servo,steveklabnik/servo,larsbergstrom/servo,tempbottle/servo,brendandahl/servo,pgonda/servo,CJ8664/servo,metajack/servo,dati91/servo,dmarcos/servo,Adenilson/prototype-viewing-distance,tschneidereit/servo,GreenRecycleBin/servo,paulrouget/servo,dsandeephegde/servo,pcwalton/servo,dhananjay92/servo,jlegendary/servo,chotchki/servo,anthgur/servo,mdibaiee/servo