Remove unused code in clCopyImage (#1027)

* Remove unused code in clCopyImage

Some of the declarations that are still used now moved to testBase.h
as these are reused throughout the image tests.

Signed-off-by: Radek Szymanski <radek.szymanski@arm.com>

* Add missing file

Signed-off-by: Radek Szymanski <radek.szymanski@arm.com>
12 files changed