[SYCL] Remove image_api LIT (#1349)

Reasons for removal:
1. The test does not really tests image API.
2. The test duplicates code from handler without any reason.
3. There are other tests that verify images and scheduler in a clear
   manner.

Signed-off-by: Alexander Batashev <alexander.batashev@intel.com>

Author: Alexander Batashev