removeOption 
  Removes the key/value pair option attached to a GdkPixbuf.
Return
TRUE if an option was removed, FALSE if not.
Since
2.36
Parameters
key
a nul-terminated string representing the key to remove.
Removes the key/value pair option attached to a GdkPixbuf.
TRUE if an option was removed, FALSE if not.
2.36
a nul-terminated string representing the key to remove.