ext_external_objects: Removed depth RBO from color tests
requested to merge hikiko/piglit:wip/ext_external_objects-remove-depth-renderbuffer-from-color-tests into main
Tests that are testing the color attachment behavior shouldn't enable the depth test and shouldn't require a renderbuffer for depth attachments in OpenGL side.
Changed the following tests:
- vk-image-overwrite
- vk-semaphores-2
This MR requires MR !510 (merged) to be merged first.
Edited by Eleni Maria Stea