Small fix to kill_idle_xact.sh, took out extranious doc line.

Author: jberkus

administration/kill_idle_xact_91.sh

@@ -61,7 +61,7 @@ SELECT array_to_string(ARRAY[ now()::TEXT,
 FROM idles
 ORDER BY xact_start;"
 
-psql -q -t -c "${KILLQUERY}"
+$PSQL -q -t -c "${KILLQUERY}"
 
 exit 0