expat: Simplify ptest-runner

Upstream mentioned our ptest-runner could likely be simplified. I had a
look at the output and yes, most of the code in the runner is now obsolete
as upstream output is compatible with what we need. Simplify accordingly.

(From OE-Core rev: 9a9f0a4a062a3c2adf2ac75b4fcdedbb7168335b)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/expat/expat/run-ptest

@@ -1,23 +1,9 @@
 #!/bin/bash
 
-output=${1:-"expat_tests.log"} # default log file
-
-# logging function
-function testCheck() {
-	testExec="$1"
-	shift
-	echo && echo ${testExec} && ./${testExec} "$@"
-	error=$?
-	result=$([[ ${error} -eq 0 ]] && echo "PASS" || echo "FAIL")
-	echo "${result}: ${testExec}" && echo "============================"
-}
-
-export output
-export -f testCheck
 TIME=$(which time)
 
-echo "Architecture: $(uname -m)" > ${output}
+echo "runtests"
-echo "Image: $(uname -sr)" >> ${output}
+${TIME} -f 'Execution time: %e s' bash -c "./runtests -v"
-${TIME} -f 'Execution time: %e s' bash -c "testCheck runtests -v" |& tee -a ${output}
+echo "runtestspp"
-${TIME} -f 'Execution time: %e s' bash -c "testCheck runtestspp -v" |& tee -a ${output}
+${TIME} -f 'Execution time: %e s' bash -c "./runtestspp -v"
 echo