Final fixup of dprintf tests.

tests/hellodprintf/hellodprintf.cpp

@@ -4,37 +4,8 @@
 #include <stdio.h>
 #include <stdarg.h>
 
-FILE* logfile = NULL;
-
-extern "C" {
-    int log_msg (const char* format, ...) {
-        int n;
-        va_list args;
-        // init the variable length argument list
-        va_start(args, format);
-
-        n = vfprintf(logfile, format, args);
-
-        // cleanup the variable length argument list
-        va_end(args);
-
-        return n;
-    }
-}
-
-extern "C" {
-    void fortranfunction_ (int* count);
-}
-
 int main (int argc, char** argv) {
 
-    const char* filename = "logfile.txt";
-    logfile = fopen(filename, "w");
-    if (logfile == NULL) {
-        fprintf(stderr, "Failed to open logfile: %s\n", filename);
-        return 1;
-    }
-
     int count = 10;
     int nfact = 1;
     int n;
@@ -46,10 +17,6 @@ int main (int argc, char** argv) {
         std::cout << std::setw(12)  << n << std::setw(14) << nfact << std::endl;
     }
 
-    fortranfunction_(&count);
-
-    fclose(logfile);
-
     return 0;
 }