accel/ivpu: Remove HWS_EXTRA_EVENTS from test modes

IVPU_TEST_MODE_HWS_EXTRA_EVENTS was never used and can be safely removed

Reviewed-by: Karol Wachowski <karol.wachowski@intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240930195322.461209-30-jacek.lawrynowicz@linux.intel.com


Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>