style: Cleanup and remove unused / dubious Length stuff.
style: Cleanup and remove unused / dubious Length stuff.

On top of #19918, turns out that the parse_numbers_are_pixels stuff is unused.

splav/servo,splav/servo,fiji-flo/servo,pyfisch/servo,DominoTree/servo,emilio/servo,DominoTree/servo,emilio/servo,notriddle/servo,notriddle/servo,mbrubeck/servo,sadmansk/servo,anthgur/servo,paulrouget/servo,nnethercote/servo,KiChjang/servo,larsbergstrom/servo,sadmansk/servo,saneyuki/servo,larsbergstrom/servo,sadmansk/servo,notriddle/servo,paulrouget/servo,paulrouget/servo,dati91/servo,saneyuki/servo,DominoTree/servo,saneyuki/servo,ConnorGBrewster/servo,larsbergstrom/servo,mattnenterprise/servo,saneyuki/servo,ConnorGBrewster/servo,notriddle/servo,jimberlage/servo,mattnenterprise/servo,canaltinova/servo,pyfisch/servo,dati91/servo,DominoTree/servo,szeged/servo,KiChjang/servo,paulrouget/servo,upsuper/servo,cbrewster/servo,paulrouget/servo,peterjoel/servo,anthgur/servo,avadacatavra/servo,paulrouget/servo,jimberlage/servo,splav/servo,szeged/servo,pyfisch/servo,paulrouget/servo,pyfisch/servo,emilio/servo,SimonSapin/servo,anthgur/servo,upsuper/servo,KiChjang/servo,peterjoel/servo,peterjoel/servo,larsbergstrom/servo,notriddle/servo,sadmansk/servo,larsbergstrom/servo,upsuper/servo,nnethercote/servo,cbrewster/servo,nnethercote/servo,avadacatavra/servo,anthgur/servo,canaltinova/servo,SimonSapin/servo,anthgur/servo,cbrewster/servo,sadmansk/servo,fiji-flo/servo,SimonSapin/servo,notriddle/servo,SimonSapin/servo,SimonSapin/servo,pyfisch/servo,dati91/servo,DominoTree/servo,fiji-flo/servo,szeged/servo,saneyuki/servo,sadmansk/servo,dati91/servo,pyfisch/servo,upsuper/servo,SimonSapin/servo,KiChjang/servo,cbrewster/servo,mattnenterprise/servo,anthgur/servo,avadacatavra/servo,avadacatavra/servo,saneyuki/servo,SimonSapin/servo,saneyuki/servo,canaltinova/servo,cbrewster/servo,paulrouget/servo,szeged/servo,upsuper/servo,saneyuki/servo,jimberlage/servo,dati91/servo,paulrouget/servo,peterjoel/servo,peterjoel/servo,szeged/servo,upsuper/servo,mbrubeck/servo,larsbergstrom/servo,fiji-flo/servo,mbrubeck/servo,cbrewster/servo,pyfisch/servo,avadacatavra/servo,KiChjang/servo,jimberlage/servo,paulrouget/servo,szeged/servo,notriddle/servo,notriddle/servo,pyfisch/servo,jimberlage/servo,canaltinova/servo,nnethercote/servo,emilio/servo,nnethercote/servo,jimberlage/servo,DominoTree/servo,ConnorGBrewster/servo,mbrubeck/servo,upsuper/servo,nnethercote/servo,ConnorGBrewster/servo,emilio/servo,upsuper/servo,larsbergstrom/servo,canaltinova/servo,mattnenterprise/servo,jimberlage/servo,emilio/servo,peterjoel/servo,splav/servo,ConnorGBrewster/servo,splav/servo,cbrewster/servo,ConnorGBrewster/servo,mattnenterprise/servo,mattnenterprise/servo,fiji-flo/servo,nnethercote/servo,jimberlage/servo,KiChjang/servo,notriddle/servo,pyfisch/servo,avadacatavra/servo,fiji-flo/servo,KiChjang/servo,DominoTree/servo,emilio/servo,dati91/servo,sadmansk/servo,nnethercote/servo,peterjoel/servo,ConnorGBrewster/servo,splav/servo,emilio/servo,emilio/servo,anthgur/servo,mbrubeck/servo,avadacatavra/servo,larsbergstrom/servo,canaltinova/servo,larsbergstrom/servo,szeged/servo,szeged/servo,mbrubeck/servo,mbrubeck/servo,KiChjang/servo,KiChjang/servo,mbrubeck/servo,szeged/servo,saneyuki/servo,peterjoel/servo,emilio/servo,DominoTree/servo,larsbergstrom/servo,splav/servo,KiChjang/servo,fiji-flo/servo,canaltinova/servo,fiji-flo/servo,notriddle/servo,dati91/servo,sadmansk/servo,avadacatavra/servo,dati91/servo,peterjoel/servo,pyfisch/servo,nnethercote/servo,mattnenterprise/servo,ConnorGBrewster/servo,canaltinova/servo,nnethercote/servo,cbrewster/servo,jimberlage/servo,SimonSapin/servo,szeged/servo,mattnenterprise/servo,splav/servo,peterjoel/servo,saneyuki/servo,splav/servo,splav/servo,anthgur/servo,DominoTree/servo,DominoTree/servo