Revert "Strict matching for not operator"
Revert "Strict matching for not operator"

This reverts commit 70d70e47c752744a4035517f548d37c2c509adec.

am11/libsass,mikebarkas/libsass,saper/libsass,technoAri/libsass,mtwebster/mint-libsass,FishingCactus/libsass,TBAPI-0KA/NSass,webdev1001/libsass,FishingCactus/libsass,webdev1001/libsass,TBAPI-0KA/NSass,errorx666/libsass,TBAPI-0KA/NSass,errorx666/libsass,FishingCactus/libsass,FishingCactus/libsass,am11/libsass,technoAri/libsass,TBAPI-0KA/NSass,panicinc/libsass,khchanel/libsass,panicinc/libsass,mtwebster/mint-libsass,am11/libsass,am11/libsass,khchanel/libsass,panicinc/libsass,webdev1001/libsass,saper/libsass,am11/libsass,khchanel/libsass,webdev1001/libsass,mikebarkas/libsass,webdev1001/libsass,mikebarkas/libsass,mikebarkas/libsass,saper/libsass,errorx666/libsass,TBAPI-0KA/NSass,saper/libsass,mtwebster/mint-libsass,panicinc/libsass,TBAPI-0KA/NSass,mtwebster/mint-libsass,khchanel/libsass,panicinc/libsass,technoAri/libsass,saper/libsass,FishingCactus/libsass,mikebarkas/libsass,errorx666/libsass,technoAri/libsass,technoAri/libsass,mtwebster/mint-libsass,khchanel/libsass