style: Don't adjust :visited styles.
style: Don't adjust :visited styles.

As the comment says those are not interesting, and it matches what we do for
text and placeholders in Servo_ComputedValues_Inherit.

This fixes https://bugzilla.mozilla.org/show_bug.cgi?id=1425893

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