chromeos_camera: Remove VAAPI image decoder tests

Currently, the VA-API image decoder unittests for JPEG and WebPs are
piggybacking on mjpeg_decode_accelerator_unittest.cc. This CL removes
these tests from mjpeg_decode_accelerator_unittest's binary.

Note that we do not lose the VA-API image decoder unittests coverage
since they now have their own binary [1][2]

[1] https://crrev.com/c/1881631
[2] https://crrev.com/c/1913488

Bug: 986074
Test: Existing test runs and passes locally on an Eve.
Change-Id: I76e4308cb73b6cf89a468d003c0abe263336a005
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1946708
Reviewed-by: Andres Calderon Jaramillo <andrescj@chromium.org>
Reviewed-by: Miguel Casas <mcasas@chromium.org>
Commit-Queue: Gil Dekel <gildekel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#720812}
1 file changed