Remove check_opencl_version function (#734)

Removing all references to check_opencl_version as similar
get_device_cl_version() can be used instead.

Fixes #527

Change-Id: I474b6f536033707e1beb9b5b39410de24672c040
Signed-off-by: Ellen Norris-Thompson <ellen.norris-thompson@arm.com>
4 files changed