Remove redundant :allow_global attribute
Remove redundant :allow_global attribute

CensorRule#allow_global was deprecated in 3818ca6

Br3nda/alaveteli,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli_old,Br3nda/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli,nzherald/alaveteli,andreicristianpetcu/alaveteli_old,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli,nzherald/alaveteli,Br3nda/alaveteli,nzherald/alaveteli,Br3nda/alaveteli,andreicristianpetcu/alaveteli_old,nzherald/alaveteli,nzherald/alaveteli,andreicristianpetcu/alaveteli,andreicristianpetcu/alaveteli_old