Remove branch aliases.
Remove branch aliases.

This has resulted in the 3.next branch falling off of packagist, which
is not helpful at all.

ADmad/cakephp,nrother/cakephp,berrygoudswaard/cakephp,ADmad/cakephp,mvdriel/cakephp,tenkoma/cakephp,davidyell/cakephp,berrygoudswaard/cakephp,davidyell/cakephp,cakephp/cakephp,elboletaire/cakephp,CakeDC/cakephp,nrother/cakephp,ndm2/cakephp,HavokInspiration/cakephp,ADmad/cakephp,CakeDC/cakephp,petteyg/cakephp,elboletaire/cakephp,dakota/cakephp,ADmad/cakephp,dakota/cakephp,dakota/cakephp,tenkoma/cakephp,thinkingmedia/cakephp,ndm2/cakephp,berrygoudswaard/cakephp,elboletaire/cakephp,thinkingmedia/cakephp,cakephp-fr/cakephp,dakota/cakephp,ndm2/cakephp,cakephp/cakephp,nrother/cakephp,cakephp-fr/cakephp,garethellis36/cakephp,petteyg/cakephp,cakephp/cakephp,cakephp/cakephp,garethellis36/cakephp,cakephp-fr/cakephp,thinkingmedia/cakephp,garethellis36/cakephp,petteyg/cakephp,mvdriel/cakephp,mvdriel/cakephp,petteyg/cakephp,HavokInspiration/cakephp,garethellis36/cakephp,tenkoma/cakephp,tenkoma/cakephp,CakeDC/cakephp,CakeDC/cakephp,ndm2/cakephp,HavokInspiration/cakephp,davidyell/cakephp,mvdriel/cakephp