ptest-packagelists: remove libinput-ptest

The libinput ptests are very sensitive to system load, and will fail
if events from the kernel don't arrive sufficiently fast (from 20ms to
200ms depending on the test).

This is by design as input processing is inherently time-sensitive and
to avoid code bugs the test suite considers timing problems fatal.

As this is causing a large proportion of ptest runs to fail in libinput,
disable the execution of these tests for now.

[ YOCTO #14164 ]

(From OE-Core rev: 54e2eb809bdfedb64219f37b82589372bbc96905)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/conf/distro/include/ptest-packagelists.inc

@@ -60,6 +60,7 @@ PTESTS_FAST_remove_mips64 = "qemu-ptest"
 #    bash-ptest \ # Test outcomes are non-deterministic by design
 #    ifupdown-ptest \ # Tested separately in lib/oeqa/selftest/cases/imagefeatures.py
 #    mdadm-ptest \ # Tests rely on non-deterministic sleep() amounts
+#    libinput-ptest \ # Tests need an unloaded system to be reliable
 #"
 
 PTESTS_SLOW = "\
@@ -72,7 +73,6 @@ PTESTS_SLOW = "\
     glib-2.0-ptest \
     gstreamer1.0-ptest \
     libevent-ptest \
-    libinput-ptest \
     lttng-tools-ptest \
     openssh-ptest \
     openssl-ptest \