Don't use postfix

src/freedombone-tests

     output "V-38668" $? ${SETLANG}
     ################
 
-    ##RHEL-06-000287
-    ##The postfix service must be enabled for mail delivery.
-
-    bash $STIG_TESTS_DIR/check-services.sh postfix >/dev/null 2>&1 &
-
-    stig_spinner $!
-    output "V-38669" $? ${SETLANG}
-    ################
-
     ##RHEL-06-000288
     ##The sendmail package must be removed.