Revert "tests/amdgpu: fix bo eviction test issue"

This reverts commit a5a400c9.

Bo evict test was disabled by default per below commit.
So still keep it as disabled.

1f6a85cc test/amdgpu: disable bo eviction test by default

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lang Yu <Lang.Yu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>