[vertex-buffer] Remove the COGL_INDICES_TYPE_UNSIGNED_INT indicies type
[vertex-buffer] Remove the COGL_INDICES_TYPE_UNSIGNED_INT indicies type

Since some embedded GPUs may not support 32bit integer indices we wont
include it until there is a particular need.

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