Revert "Adapt psasim"

This reverts commit b6f6cc89d08b01eddc1b1f20aa9e6ee56f566bc7.

The usage of files /tmp/ could result in race conditions if
several several are run on the same machine.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/psa-client-server/psasim/test/kill_server.sh b/tests/psa-client-server/psasim/test/kill_server.sh
index 0425282..7aba5a3 100755
--- a/tests/psa-client-server/psasim/test/kill_server.sh
+++ b/tests/psa-client-server/psasim/test/kill_server.sh
@@ -8,8 +8,8 @@
 pkill psa_server || true
 
 # Remove temporary files and logs
-rm -f /tmp/psa_notify_*
-rm -f /tmp/psa_service_*
+rm -f psa_notify_*
+rm -f psa_service_*
 rm -f psa_server.log
 
 # Remove all IPCs