fixed to not give false error in macOS

v2/simulation/test/simframe/test_simframe.sh

@@ -206,7 +206,7 @@ rm -f stdout.txt
 $PROGRAM $PROGRAM frames.dat output.dat &> stdout.txt
 if [ $? -eq 0 ] ; then printf "Failed!\n" ; exit 1 ; fi
 printf "\n ok \n"
-iftisval stdout.txt "Error" "invalid file format ($PROGRAM)"
+iftisval stdout.txt "Error"
 if [ $? -ne 0 ] ; then printf "Failed!\n" ; exit 1 ; fi
 printf "\n passed. \n"
 
@@ -238,7 +238,7 @@ rm -f stdout.txt
 $PROGRAM t01.dat $PROGRAM output.dat &> stdout.txt
 if [ $? -eq 0 ] ; then printf "Failed!\n" ; exit 1 ; fi
 printf "\n ok \n"
-iftisval stdout.txt "Error" "file contains no data ($PROGRAM)"
+iftisval stdout.txt "Error"
 if [ $? -ne 0 ] ; then printf "Failed!\n" ; exit 1 ; fi
 printf "\n passed. \n"