staging: android: uapi: drop definitions of removed ION_IOC_{FREE,SHARE} ioctls

This problem was found by strace ioctl list generator.

Fixes: 15c6098c

 ("staging: android: ion: Remove ion_handle and ion_client")
Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>