Remove GarbageCollected support from the bindings

sky/engine/core/html/canvas/OESTextureHalfFloat.idl

 /*
  * Copyright (C) 2013 Motorola Mobility LLC. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 10 matching lines @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 typedef unsigned long GLenum;
 
 [
     NoInterfaceObject,
     DoNotCheckConstants,
-    WillBeGarbageCollected,
 ] interface OESTextureHalfFloat {
     const GLenum HALF_FLOAT_OES                 = 0x8D61;
 };