Cleanup of some temporary files

Basic_System/ef/vpl_evaluate.pl

@@ -128,6 +128,7 @@ sub run_command($$$) {
     $data->{code} = $data->{failure} >> 8;
     $data->{output} = read_file(".output.txt");
     $data->{error} = read_file(".error.txt");
+    remove(".input.txt", ".output.txt", ".error.txt");
     return $data;
 }