pretty: Remove usage of fmt!

src/test/pretty/block-comment-wchar.pp

@@ -110,6 +110,6 @@ fn main() {
          '\u2028', '\u2029', '\u202F', '\u205F', '\u3000'];
     for c in chars.iter() {
         let ws = c.is_whitespace();
-        println(fmt!("%? %?" , c , ws));
+        println!("{:?} {:?}" , c , ws);
     }
 }

src/test/pretty/block-comment-wchar.rs

@@ -104,6 +104,6 @@ fn main() {
          '\u2028', '\u2029', '\u202F', '\u205F', '\u3000'];
     for c in chars.iter() {
         let ws = c.is_whitespace();
-        println(fmt!("%? %?", c , ws));
+        println!("{:?} {:?}", c , ws);
     }
 }

src/test/pretty/issue-929.rs

@@ -8,6 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-fn f() { if (1 == fail!()) { } else { } }
+fn f() { if (1 == fail2!()) { } else { } }
 
 fn main() { }