ability.rb: remove some block methods.
ability.rb: remove some block methods.

codingnutty/loomio,juliagra/DBCloomio,juliagra/DBCloomio,isomerase/loomio,gvalerin/loomio,kimihito/loomio,doomergithub/loomio,codingnutty/loomio,doomergithub/loomio,labhackercd/loomio,sicambria/loomio,mhjb/loomio,piratas-ar/loomio,mlarghydracept/loomio,annewchen/loomio,doomergithub/loomio,wangjun/loomio,loomio/loomio,piratas-ar/loomio,labhackercd/loomio,juliagra/DBCloomio,annewchen/loomio,mlarghydracept/loomio,tachyons/loomio,kimihito/loomio,codingnutty/loomio,tachyons/loomio,wangjun/loomio,mhjb/loomio,gvalerin/loomio,isomerase/loomio,Collabforge/site-collabio,piratas-ar/loomio,digideskio/loomio,juliagra/loomio,annewchen/loomio,mhjb/loomio,HadoDokis/loomio,kimihito/loomio,sicambria/loomio,FSFTN/Loomio,mlarghydracept/loomio,wangjun/loomio,HadoDokis/loomio,piratas-ar/loomio,Collabforge/site-collabio,tachyons/loomio,Collabforge/site-collabio,Collabforge/site-collabio,tachyons/loomio,labhackercd/loomio,isomerase/loomio,sicambria/loomio,FSFTN/Loomio,FSFTN/Loomio,sicambria/loomio,HadoDokis/loomio,digideskio/loomio,juliagra/loomio,loomio/loomio,aca13jmf/loomio,labhackercd/loomio,loomio/loomio,HadoDokis/loomio,aca13jmf/loomio,juliagra/loomio,mhjb/loomio,digideskio/loomio,FSFTN/Loomio,isomerase/loomio,gvalerin/loomio,loomio/loomio,aca13jmf/loomio