Removed useless attribute definition from TableReference.
Removed useless attribute definition from TableReference.

utilum/rails,ngpestelos/arel,utilum/rails,flanger001/rails,amitsuroliya/arel,Envek/rails,mohitnatoo/rails,yahonda/rails,brynary/arel,lcreid/rails,Erol/rails,flanger001/rails,rails/arel,prathamesh-sonpatki/rails,tjschuck/rails,arunagw/rails,aditya-kapoor/rails,prathamesh-sonpatki/rails,illacceptanything/illacceptanything,arunagw/rails,kmcphillips/rails,tjschuck/rails,aditya-kapoor/rails,palkan/rails,schuetzm/rails,mechanicles/rails,illacceptanything/illacceptanything,yawboakye/rails,MSP-Greg/rails,sferik/arel,Vasfed/rails,ngpestelos/arel,yawboakye/rails,Edouard-chin/rails,rails/rails,yalab/rails,jeremy/rails,MSP-Greg/rails,vipulnsward/rails,tgxworld/rails,fabianoleittes/rails,betesh/rails,Envek/rails,jacobmoe/arel,schuetzm/rails,Erol/rails,notapatch/rails,illacceptanything/illacceptanything,flanger001/rails,illacceptanything/illacceptanything,iainbeeston/rails,kmcphillips/rails,EmmaB/rails-1,bogdanvlviv/rails,iainbeeston/rails,yahonda/arel,fabianoleittes/rails,prathamesh-sonpatki/rails,bogdanvlviv/rails,notapatch/rails,esparta/rails,kddeisz/rails,lcreid/rails,EmmaB/rails-1,shioyama/rails,Envek/rails,illacceptanything/illacceptanything,shioyama/rails,yalab/rails,yahonda/rails,flavorjones/arel,vipulnsward/rails,yawboakye/rails,kmcphillips/rails,esparta/rails,BlakeWilliams/rails,Erol/rails,maclover7/arel,jeremy/rails,yhirano55/rails,Stellenticket/rails,Vasfed/rails,tgxworld/rails,baerjam/rails,Eric-Guo/arel,yawboakye/rails,BlakeWilliams/rails,slobodankovacevic/arel,eileencodes/rails,schuetzm/rails,illacceptanything/illacceptanything,notapatch/rails,aditya-kapoor/rails,Edouard-chin/rails,felixbuenemann/arel,deraru/rails,zeckalpha/arel,illacceptanything/illacceptanything,Erol/rails,esparta/rails,amatsuda/arel,iainbeeston/rails,kddeisz/rails,illacceptanything/illacceptanything,printercu/rails,mechanicles/rails,illacceptanything/illacceptanything,MSP-Greg/rails,Stellenticket/rails,kbrock/arel,Envek/rails,amitsuroliya/arel,prathamesh-sonpatki/arel,gauravtiwari/rails,Edouard-chin/rails,kddeisz/rails,lcreid/rails,rafaelfranca/omg-rails,bogdanvlviv/rails,bogdanvlviv/rails,illacceptanything/illacceptanything,repinel/rails,untidy-hair/rails,assain/rails,printercu/rails,MSP-Greg/rails,Vasfed/rails,eileencodes/rails,joonyou/rails,kmcphillips/rails,rafaelfranca/omg-rails,jasnow/arel,modernmsg/arel,pvalena/rails,guilleiguaran/motion-arel,gauravtiwari/rails,deraru/rails,assain/rails,georgeclaghorn/rails,mohitnatoo/rails,pvalena/rails,baerjam/rails,palkan/rails,NARKOZ/arel,schuetzm/rails,fabianoleittes/rails,tjschuck/rails,EmmaB/rails-1,illacceptanything/illacceptanything,universsky/arel,gauravtiwari/rails,georgeclaghorn/rails,flanger001/rails,rails/rails,universsky/arel,arunagw/rails,yhirano55/rails,joonyou/rails,untidy-hair/rails,vipulnsward/rails,untidy-hair/rails,prathamesh-sonpatki/rails,georgeclaghorn/rails,Vasfed/rails,tacid/arel,rails/rails,starknx/rails,Stellenticket/rails,yalab/rails,mohitnatoo/rails,iainbeeston/rails,deraru/rails,betesh/rails,jsanders/arel,modernmsg/arel,fabianoleittes/rails,vipulnsward/arel,BlakeWilliams/rails,mohitnatoo/rails,utilum/rails,palkan/rails,shioyama/rails,shioyama/rails,joonyou/rails,repinel/rails,yahonda/rails,pvalena/rails,jemc/arel,BlakeWilliams/rails,yhirano55/rails,yahonda/rails,arunagw/rails,tgxworld/rails,jacobmoe/arel,rafaelfranca/omg-rails,printercu/rails,deraru/rails,illacceptanything/illacceptanything,eileencodes/rails,Stellenticket/rails,utilum/rails,rails/rails,notapatch/rails,kbrock/arel,illacceptanything/illacceptanything,starknx/rails,kddeisz/rails,eileencodes/rails,Eric-Guo/arel,mechanicles/rails,joonyou/rails,jetthoughts/arel,jasnow/arel,zeckalpha/arel,illacceptanything/illacceptanything,georgeclaghorn/rails,printercu/rails,jeremy/rails,jemc/arel,yalab/rails,untidy-hair/rails,betesh/rails,ifad/arel-sybase-visitor,yahonda/arel,betesh/rails,pvalena/rails,tgxworld/rails,tacid/arel,repinel/rails,aditya-kapoor/rails,baerjam/rails,yhirano55/rails,mechanicles/rails,esparta/rails,palkan/rails,assain/rails,vipulnsward/rails,Edouard-chin/rails,assain/rails,yui-knk/arel,lcreid/rails,jeremy/rails,yui-knk/arel,starknx/rails,baerjam/rails,tjschuck/rails,illacceptanything/illacceptanything,maclover7/arel,repinel/rails