Remove unused variable to fix compiler warning.
Remove unused variable to fix compiler warning.

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