Auto merge of #13579 - servo:old-doc, r=Wafflespeanut
Auto merge of #13579 - servo:old-doc, r=Wafflespeanut

Remove some documentation that is no longer correct.

<!-- Reviewable:start -->
This change is [<img src="https://reviewable.io/review_button.svg" height="34" align="absmiddle" alt="Reviewable"/>](https://reviewable.io/reviews/servo/servo/13579)
<!-- Reviewable:end -->

DominoTree/servo,eddyb/servo,mbrubeck/servo,emilio/servo,peterjoel/servo,paulrouget/servo,KiChjang/servo,upsuper/servo,larsbergstrom/servo,avadacatavra/servo,canaltinova/servo,splav/servo,splav/servo,sadmansk/servo,DominoTree/servo,nnethercote/servo,SimonSapin/servo,canaltinova/servo,avadacatavra/servo,CJ8664/servo,dati91/servo,cbrewster/servo,emilio/servo,upsuper/servo,sadmansk/servo,ConnorGBrewster/servo,nnethercote/servo,jimberlage/servo,peterjoel/servo,CJ8664/servo,dati91/servo,DominoTree/servo,jimberlage/servo,notriddle/servo,fiji-flo/servo,KiChjang/servo,nnethercote/servo,mattnenterprise/servo,paulrouget/servo,DominoTree/servo,fiji-flo/servo,nnethercote/servo,upsuper/servo,canaltinova/servo,pyfisch/servo,eddyb/servo,SimonSapin/servo,larsbergstrom/servo,pyfisch/servo,thiagopnts/servo,mbrubeck/servo,dati91/servo,sadmansk/servo,fiji-flo/servo,jimberlage/servo,nnethercote/servo,ConnorGBrewster/servo,saneyuki/servo,dati91/servo,pyfisch/servo,fiji-flo/servo,emilio/servo,mbrubeck/servo,mbrubeck/servo,CJ8664/servo,notriddle/servo,avadacatavra/servo,upsuper/servo,KiChjang/servo,upsuper/servo,emilio/servo,ConnorGBrewster/servo,KiChjang/servo,fiji-flo/servo,nnethercote/servo,splav/servo,peterjoel/servo,mattnenterprise/servo,mbrubeck/servo,CJ8664/servo,KiChjang/servo,sadmansk/servo,emilio/servo,rnestler/servo,mbrubeck/servo,larsbergstrom/servo,mattnenterprise/servo,szeged/servo,fiji-flo/servo,jimberlage/servo,splav/servo,SimonSapin/servo,szeged/servo,SimonSapin/servo,ConnorGBrewster/servo,DominoTree/servo,ConnorGBrewster/servo,dsandeephegde/servo,DominoTree/servo,DominoTree/servo,paulrouget/servo,CJ8664/servo,szeged/servo,splav/servo,rnestler/servo,anthgur/servo,notriddle/servo,mbrubeck/servo,emilio/servo,pyfisch/servo,paulrouget/servo,dsandeephegde/servo,paulrouget/servo,pyfisch/servo,splav/servo,avadacatavra/servo,jimberlage/servo,jimberlage/servo,thiagopnts/servo,KiChjang/servo,peterjoel/servo,SimonSapin/servo,nnethercote/servo,rnestler/servo,sadmansk/servo,DominoTree/servo,mbrubeck/servo,peterjoel/servo,emilio/servo,dsandeephegde/servo,larsbergstrom/servo,avadacatavra/servo,rnestler/servo,KiChjang/servo,nnethercote/servo,DominoTree/servo,SimonSapin/servo,mattnenterprise/servo,CJ8664/servo,notriddle/servo,canaltinova/servo,dsandeephegde/servo,ConnorGBrewster/servo,eddyb/servo,saneyuki/servo,jimberlage/servo,DominoTree/servo,szeged/servo,dati91/servo,splav/servo,splav/servo,saneyuki/servo,mattnenterprise/servo,cbrewster/servo,notriddle/servo,anthgur/servo,saneyuki/servo,ConnorGBrewster/servo,sadmansk/servo,rnestler/servo,peterjoel/servo,szeged/servo,anthgur/servo,mattnenterprise/servo,paulrouget/servo,mattnenterprise/servo,rnestler/servo,KiChjang/servo,eddyb/servo,paulrouget/servo,saneyuki/servo,saneyuki/servo,peterjoel/servo,szeged/servo,pyfisch/servo,cbrewster/servo,anthgur/servo,sadmansk/servo,avadacatavra/servo,thiagopnts/servo,fiji-flo/servo,jimberlage/servo,peterjoel/servo,canaltinova/servo,dati91/servo,pyfisch/servo,saneyuki/servo,peterjoel/servo,cbrewster/servo,paulrouget/servo,eddyb/servo,upsuper/servo,szeged/servo,paulrouget/servo,szeged/servo,paulrouget/servo,dsandeephegde/servo,larsbergstrom/servo,eddyb/servo,dsandeephegde/servo,rnestler/servo,thiagopnts/servo,eddyb/servo,dsandeephegde/servo,eddyb/servo,CJ8664/servo,szeged/servo,rnestler/servo,notriddle/servo,dati91/servo,thiagopnts/servo,anthgur/servo,SimonSapin/servo,cbrewster/servo,cbrewster/servo,cbrewster/servo,upsuper/servo,notriddle/servo,larsbergstrom/servo,notriddle/servo,larsbergstrom/servo,emilio/servo,avadacatavra/servo,anthgur/servo,saneyuki/servo,KiChjang/servo,thiagopnts/servo,avadacatavra/servo,larsbergstrom/servo,KiChjang/servo,peterjoel/servo,dsandeephegde/servo,upsuper/servo,dati91/servo,canaltinova/servo,notriddle/servo,larsbergstrom/servo,nnethercote/servo,pyfisch/servo,canaltinova/servo,saneyuki/servo,splav/servo,szeged/servo,pyfisch/servo,pyfisch/servo,notriddle/servo,anthgur/servo,ConnorGBrewster/servo,jimberlage/servo,saneyuki/servo,thiagopnts/servo,fiji-flo/servo,mattnenterprise/servo,thiagopnts/servo,splav/servo,larsbergstrom/servo,CJ8664/servo,sadmansk/servo,cbrewster/servo,emilio/servo,anthgur/servo,canaltinova/servo,SimonSapin/servo,emilio/servo,nnethercote/servo