drm/xe: remove duplicate <kunit/test-bug.h> include

drm/xe: remove duplicate <kunit/test-bug.h> include

xe_pci.c includes <kunit/test-bug.h> twice, separated only by the
<kunit/test.h> include. Drop the redundant second include; this is a
non-functional cleanup flagged by scripts/checkincludes.pl.

Fixes: 6cad22853cb8 ("drm/xe/kunit: Add stub to read_gmdid")
Signed-off-by: Anas Khan <anxkhn28@gmail.com>
Link: https://patch.msgid.link/20260702112820.34675-1-anxkhn28@gmail.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
(cherry picked from commit 84ed5b0a925721aaf069d36e18a99db966ff4e80)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>