[Sass] Don't add a line for empty @import statements.
[Sass] Don't add a line for empty @import statements.

amitsuroliya/sass,schneems/sass,Galactix/sass,nicklima/sass,schneems/sass,nazar-pc/haml,modulexcite/sass,haml/haml,srawlins/sass,HugoRLopes/sass,srinivashappy/sass,tangposmarvin/haml,saper/sass,JuanitoFatas/sass,jaroot32/sass,PMArtz92/sass,nazar-pc/haml,xzyfer/sass,StephanieMak/sass,hcatlin/sass,briangonzalez/sass,HugoRLopes/sass,askl56/sass,Andrey-Pavlov/sass,stewx/sass,Iamronan/sass,keithpitty/haml,tenderlove/sass,concord-consortium/haml,cmpereirasi/sass,Ahnita/sass,chriseppstein/haml,dg1dd1ngs/haml,PMArtz92/sass,MetaAshley/sass,dg1dd1ngs/haml,OrenBochman/sass,haml/haml,ridixcr/sass,nicklima/sass,JuanitoFatas/sass,lmetla/sass,14113/sass,antonifs/sass,lmetla/sass,haml/haml,dylannnn/sass,amitsuroliya/sass,DanteKaris/sass,nickg33/sass,haml/haml,purcell/haml,modulexcite/sass,baiyanghese/sass,oss-practice/sass,macressler/haml,Anshdesire/sass,keithpitty/haml,Ahnita/sass,askl56/sass,Nzaga/sass,ridixcr/sass,chriseppstein/sass,tangposmarvin/sass,srinivashappy/sass,cmpereirasi/sass,stewx/sass,StephanieMak/sass,MetaAshley/sass,chriseppstein/haml,zaru/sass,Industrys/sass,uniba/hamldoc_ja,srawlins/sass,liquidmetal/sass,rammy7219/sass,xzyfer/sass,Nzaga/sass,OrenBochman/sass,liquidmetal/sass,stanhu/haml,Galactix/sass,stanhu/haml,tangposmarvin/haml,sideci-sample/sideci-sample-haml,hcatlin/sass,rammy7219/sass,antonifs/sass,dylannnn/sass,saper/sass,Andrey-Pavlov/sass,Iamronan/sass,Industrys/sass,macressler/haml,nickg33/sass,danielfein/sass,zaru/sass,jaroot32/sass,Anshdesire/sass,danielfein/sass,amatsuda/haml,tangposmarvin/sass,DanteKaris/sass