selftests/ftrace: Remove trigger-extended-error-support testcase

#!/bin/sh

# SPDX-License-Identifier: GPL-2.0

# description: event trigger - test extended error support

fail() { #msg

    echo $1

    exit_fail

}

if [ ! -f set_event ]; then

    echo "event tracing is not supported"

    exit_unsupported

fi

if [ ! -f synthetic_events ]; then

    echo "synthetic event is not supported"

    exit_unsupported

fi

echo "Test extended error support"

echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger

! echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger 2> /dev/null

if ! grep -q "ERROR:" events/sched/sched_wakeup/hist; then

    fail "Failed to generate extended error in histogram"

fi

exit 0