Tutorial: Remove MakeTable.cxx from Steps 5 and 6

This file is not referenced until Step 6 and, therefore, should be added to
the source code at Step 7.

Fixes: #20618

Help/guide/tutorial/Step5/MathFunctions/MakeTable.cxx

@@ -1,25 +0,0 @@
-// A simple program that builds a sqrt table
-#include <cmath>
-#include <fstream>
-#include <iostream>
-
-int main(int argc, char* argv[])
-{
-  // make sure we have enough arguments
-  if (argc < 2) {
-    return 1;
-  }
-
-  std::ofstream fout(argv[1], std::ios_base::out);
-  const bool fileOpen = fout.is_open();
-  if (fileOpen) {
-    fout << "double sqrtTable[] = {" << std::endl;
-    for (int i = 0; i < 10; ++i) {
-      fout << sqrt(static_cast<double>(i)) << "," << std::endl;
-    }
-    // close the table with a zero
-    fout << "0};" << std::endl;
-    fout.close();
-  }
-  return fileOpen ? 0 : 1; // return 0 if wrote the file
-}

Help/guide/tutorial/Step6/MathFunctions/MakeTable.cxx

@@ -1,25 +0,0 @@
-// A simple program that builds a sqrt table
-#include <cmath>
-#include <fstream>
-#include <iostream>
-
-int main(int argc, char* argv[])
-{
-  // make sure we have enough arguments
-  if (argc < 2) {
-    return 1;
-  }
-
-  std::ofstream fout(argv[1], std::ios_base::out);
-  const bool fileOpen = fout.is_open();
-  if (fileOpen) {
-    fout << "double sqrtTable[] = {" << std::endl;
-    for (int i = 0; i < 10; ++i) {
-      fout << sqrt(static_cast<double>(i)) << "," << std::endl;
-    }
-    // close the table with a zero
-    fout << "0};" << std::endl;
-    fout.close();
-  }
-  return fileOpen ? 0 : 1; // return 0 if wrote the file
-}