Simplify example

b/B.b

@@ -1,10 +1,3 @@
-/* Hello World in B */
-
 main() {
-    extern a, b, c;
+    putchar ('Hell'); putchar ('o Wo'); putchar ('rld'); putchar ('*n');
-      putchar (a); putchar (b); putchar (c); putchar ('!*n');
 }
-
-a 'hell' ;
-b 'o, w' ;
-c 'orld' ;