Remove unused parameter from method
Remove unused parameter from method

The `attribute` parameter is not used inside the `normalize_detail`
method. This does not need to go through a deprecation cycle, since the
method is private.

kirs/rails-1,lcreid/rails,matrinox/rails,mathieujobin/reduced-rails-for-travis,schuetzm/rails,shioyama/rails,Erol/rails,amoody2108/TechForJustice,coreyward/rails,joonyou/rails,palkan/rails,palkan/rails,assain/rails,iainbeeston/rails,alecspopa/rails,amoody2108/TechForJustice,flanger001/rails,Stellenticket/rails,prathamesh-sonpatki/rails,repinel/rails,notapatch/rails,kaspth/rails,brchristian/rails,yahonda/rails,yhirano55/rails,yasslab/railsguides.jp,Spin42/rails,illacceptanything/illacceptanything,mtsmfm/rails,Erol/rails,koic/rails,Edouard-chin/rails,tijwelch/rails,vipulnsward/rails,printercu/rails,xlymian/rails,voray/rails,betesh/rails,vipulnsward/rails,vipulnsward/rails,utilum/rails,ledestin/rails,iainbeeston/rails,kddeisz/rails,vipulnsward/rails,betesh/rails,MSP-Greg/rails,alecspopa/rails,yhirano55/rails,rafaelfranca/omg-rails,gavingmiller/rails,joonyou/rails,rbhitchcock/rails,kmcphillips/rails,yasslab/railsguides.jp,schuetzm/rails,joonyou/rails,lucasmazza/rails,travisofthenorth/rails,maicher/rails,shioyama/rails,Erol/rails,Vasfed/rails,kachick/rails,kamipo/rails,tjschuck/rails,notapatch/rails,tijwelch/rails,mijoharas/rails,Sen-Zhang/rails,BlakeWilliams/rails,lcreid/rails,fabianoleittes/rails,fabianoleittes/rails,gfvcastro/rails,kmayer/rails,schuetzm/rails,bolek/rails,mijoharas/rails,yalab/rails,arunagw/rails,bolek/rails,iainbeeston/rails,ttanimichi/rails,aditya-kapoor/rails,sealocal/rails,kirs/rails-1,illacceptanything/illacceptanything,hanystudy/rails,mtsmfm/railstest,arjes/rails,ngpestelos/rails,felipecvo/rails,rossta/rails,ttanimichi/rails,yawboakye/rails,pschambacher/rails,yasslab/railsguides.jp,baerjam/rails,joonyou/rails,Erol/rails,fabianoleittes/rails,MichaelSp/rails,mechanicles/rails,koic/rails,kddeisz/rails,riseshia/railsguides.kr,xlymian/rails,gcourtemanche/rails,pvalena/rails,shioyama/rails,yawboakye/rails,printercu/rails,kamipo/rails,xlymian/rails,schuetzm/rails,tgxworld/rails,yawboakye/rails,jeremy/rails,yhirano55/rails,eileencodes/rails,esparta/rails,riseshia/railsguides.kr,eileencodes/rails,jeremy/rails,ttanimichi/rails,mijoharas/rails,jeremy/rails,coreyward/rails,illacceptanything/illacceptanything,deraru/rails,bradleypriest/rails,starknx/rails,gauravtiwari/rails,kmayer/rails,matrinox/rails,gfvcastro/rails,hanystudy/rails,MSP-Greg/rails,gavingmiller/rails,repinel/rails,BlakeWilliams/rails,illacceptanything/illacceptanything,ngpestelos/rails,Vasfed/rails,richseviora/rails,vassilevsky/rails,Stellenticket/rails,eileencodes/rails,vassilevsky/rails,voray/rails,iainbeeston/rails,assain/rails,elfassy/rails,gfvcastro/rails,bogdanvlviv/rails,tgxworld/rails,eileencodes/rails,tgxworld/rails,illacceptanything/illacceptanything,pvalena/rails,hanystudy/rails,gfvcastro/rails,odedniv/rails,aditya-kapoor/rails,sealocal/rails,bradleypriest/rails,bradleypriest/rails,samphilipd/rails,arjes/rails,tjschuck/rails,Edouard-chin/rails,notapatch/rails,felipecvo/rails,marklocklear/rails,esparta/rails,illacceptanything/illacceptanything,marklocklear/rails,flanger001/rails,pschambacher/rails,georgeclaghorn/rails,brchristian/rails,mathieujobin/reduced-rails-for-travis,prathamesh-sonpatki/rails,notapatch/rails,yahonda/rails,kachick/rails,kmcphillips/rails,starknx/rails,amoody2108/TechForJustice,kenta-s/rails,printercu/rails,tjschuck/rails,Edouard-chin/rails,gauravtiwari/rails,coreyward/rails,arunagw/rails,felipecvo/rails,assain/rails,maicher/rails,Stellenticket/rails,lcreid/rails,mtsmfm/rails,mathieujobin/reduced-rails-for-travis,tijwelch/rails,BlakeWilliams/rails,flanger001/rails,baerjam/rails,richseviora/rails,baerjam/rails,EmmaB/rails-1,MSP-Greg/rails,yalab/rails,yhirano55/rails,rbhitchcock/rails,kaspth/rails,illacceptanything/illacceptanything,untidy-hair/rails,samphilipd/rails,Edouard-chin/rails,illacceptanything/illacceptanything,koic/rails,kamipo/rails,marklocklear/rails,EmmaB/rails-1,Sen-Zhang/rails,palkan/rails,fabianoleittes/rails,ngpestelos/rails,vassilevsky/rails,elfassy/rails,lcreid/rails,sergey-alekseev/rails,illacceptanything/illacceptanything,Sen-Zhang/rails,lucasmazza/rails,illacceptanything/illacceptanything,rails/rails,aditya-kapoor/rails,prathamesh-sonpatki/rails,gcourtemanche/rails,Spin42/rails,stefanmb/rails,travisofthenorth/rails,mohitnatoo/rails,yahonda/rails,arunagw/rails,arjes/rails,pschambacher/rails,illacceptanything/illacceptanything,rafaelfranca/omg-rails,gauravtiwari/rails,ledestin/rails,repinel/rails,mechanicles/rails,riseshia/railsguides.kr,deraru/rails,mtsmfm/rails,baerjam/rails,utilum/rails,richseviora/rails,bolek/rails,kenta-s/rails,Vasfed/rails,maicher/rails,kddeisz/rails,betesh/rails,prathamesh-sonpatki/rails,yalab/rails,yawboakye/rails,yalab/rails,rafaelfranca/omg-rails,untidy-hair/rails,bogdanvlviv/rails,illacceptanything/illacceptanything,Stellenticket/rails,MichaelSp/rails,untidy-hair/rails,starknx/rails,MichaelSp/rails,betesh/rails,yasslab/railsguides.jp,utilum/rails,deraru/rails,kmayer/rails,kenta-s/rails,stefanmb/rails,samphilipd/rails,rbhitchcock/rails,mechanicles/rails,voray/rails,Vasfed/rails,lucasmazza/rails,kddeisz/rails,travisofthenorth/rails,aditya-kapoor/rails,utilum/rails,sergey-alekseev/rails,tgxworld/rails,Envek/rails,rossta/rails,arunagw/rails,rails/rails,georgeclaghorn/rails,shioyama/rails,riseshia/railsguides.kr,rails/rails,sergey-alekseev/rails,kaspth/rails,stefanmb/rails,Envek/rails,deraru/rails,mechanicles/rails,kirs/rails-1,flanger001/rails,georgeclaghorn/rails,illacceptanything/illacceptanything,travisofthenorth/rails,MSP-Greg/rails,odedniv/rails,rossta/rails,elfassy/rails,rails/rails,mtsmfm/railstest,sealocal/rails,Spin42/rails,odedniv/rails,esparta/rails,pvalena/rails,yahonda/rails,illacceptanything/illacceptanything,assain/rails,Envek/rails,pvalena/rails,matrinox/rails,brchristian/rails,mohitnatoo/rails,printercu/rails,illacceptanything/illacceptanything,bogdanvlviv/rails,mohitnatoo/rails,mtsmfm/railstest,kmcphillips/rails,alecspopa/rails,tjschuck/rails,BlakeWilliams/rails,bogdanvlviv/rails,gavingmiller/rails,jeremy/rails,untidy-hair/rails,palkan/rails,repinel/rails,georgeclaghorn/rails,ledestin/rails,gcourtemanche/rails,EmmaB/rails-1,Envek/rails,mohitnatoo/rails,esparta/rails,kachick/rails,kmcphillips/rails