igt@kms_flip@subtests - skip - Test requirement not met in function run_test, Test requirement: modes

https://gfx-ci.igk.intel.com/cibuglog-ng/testresult/1856841353?query_key=8affee1f0e9397b0adf4b02d290e642bc18c10dc

Using IGT_SRANDOM=1722343833 for randomisation
Opened device: /dev/dri/card0
Using monotonic timestamps
Starting subtest: plain-flip-interruptible
Test requirement not met in function run_test, file ../../../usr/src/igt-gpu-tools/tests/kms_flip.c:1820:
Test requirement: modes
Subtest plain-flip-interruptible: SKIP (0.002s)