Get rid of non-library using 'add'

src/add.c

-/* Adds up 2 integers, not the most exciting thing in the world */
 #include <stdio.h>
 
+#include "utils.h"
+
 int
-main (int argc, char **argv)
+main (int    argc,
+      char **argv)
 {
-	int a, b;
-
-	if (argc != 3)
-	{
-		printf ("Please input an integer value: ");
-		scanf ("%d", &a);
-
-		printf ("Please input an integer value: ");
-		scanf ("%d", &b);
-	}
-	else
-	{
-		sscanf (argv[1], "%d", &a);
-		sscanf (argv[2], "%d", &b);
-	}
-
-	printf ("%d + %d = %d\n", a, b, a + b);
-	
-	return 0;
+    int *vals = get_ints (argc, argv, 2, "Please input an integer value");
+    printf ("%d + %d = %d\n", vals[0], vals[1], vals[0] + vals[1]);
+    return 0;
 }

src/add2.c

-#include <stdio.h>
-
-#include "utils.h"
-
-int
-main (int    argc,
-      char **argv)
-{
-    int *vals = get_ints (argc, argv, 2, "Please input an integer value");
-    printf ("%d + %d = %d\n", vals[0], vals[1], vals[0] + vals[1]);
-    return 0;
-}

src/meson.build

-executable('add', 'add.c')
-executable('add2', 'add2.c', dependencies: utils_dep)
+executable('add', 'add.c', dependencies: utils_dep)
 executable('angle', 'angle.c', dependencies: libm)
 executable('array-length', 'array-length.c', dependencies: types_dep)
 executable('binary', 'binary.c')