qa/1123: drop a failing subtest

We're using execvp() unde the covers, which means we're exposed to
the user's login $PATH setting ... so we can't tell if . is in the
$PATH or not, which makes one of the subtests non-deterministic.

qa/1123

@@ -117,13 +117,5 @@ export PATH
 pmchart -c ./`basename $tmp.sh` -C -C 2>&1 \
 | _filter
 
-echo '-- now without . in $PATH, but NO ./ prefix for config arg (should fail) ...'
-pmchart -c `basename $tmp.sh` -C -C 2>&1 \
-| _filter \
-| sed -e '/^__pmProcessPipe:/{
-s/pid=[0-9][0-9]*/pid=PID/
-s/-[0-9][0-9]*\.sh/-MYPID.sh/
-}'
-
 # all done
 exit

qa/1123.out

@@ -5,5 +5,3 @@ Found between 1 and 10 busy processes
 QA test ...
 -- first with . in $PATH ...
 -- now without . in $PATH, but ./ prefix for config arg ...
--- now without . in $PATH, but NO ./ prefix for config arg (should fail) ...
-__pmProcessPipe: child pid=PID execvp(1123-MYPID.sh, ...) failed