Remove unused variable 'lang'
Remove unused variable 'lang'

Fix a compiler warning.

heysion/clutter-clone,kerrickstaley/clutter-vala,djdeath/clutter-android,Distrotech/clutter,spatulasnout/clutter,kerrickstaley/clutter-vala,dlespiau/clutter,jigpu/clutter,nobled/clutter,spatulasnout/clutter,nobled/clutter,ebassi/clutter,Distrotech/clutter,heysion/clutter-clone,kerrickstaley/clutter-vala,spatulasnout/clutter,ebassi/clutter,GNOME/clutter,ebassi/clutter,collects/clutter,rkudiyarov/clutter_osx,collects/clutter,heysion/clutter-clone,GNOME/clutter,Distrotech/clutter,djdeath/clutter,rkudiyarov/clutter_osx,djdeath/clutter-multithreaded,heysion/clutter-clone,dlespiau/clutter,djdeath/clutter-multithreaded,djdeath/clutter-multithreaded,jigpu/clutter,dlespiau/clutter,jigpu/clutter,Distrotech/clutter,collects/clutter,djdeath/clutter-android,djdeath/clutter-android,Distrotech/clutter,djdeath/clutter-android,jigpu/clutter,spatulasnout/clutter,ebassi/clutter,nobled/clutter,djdeath/clutter,djdeath/clutter,Distrotech/clutter,GNOME/clutter,heysion/clutter-clone,kerrickstaley/clutter-vala,collects/clutter,ebassi/clutter,jigpu/clutter,GNOME/clutter,GNOME/clutter,djdeath/clutter,djdeath/clutter-multithreaded,rkudiyarov/clutter_osx,jigpu/clutter,collects/clutter,spatulasnout/clutter,rkudiyarov/clutter_osx,djdeath/clutter,djdeath/clutter,djdeath/clutter-android