Revert of Fix printf formats

src/ast/prettyprinter.cc

Index: src/ast/prettyprinter.cc
diff --git a/src/ast/prettyprinter.cc b/src/ast/prettyprinter.cc
index e845821ebdaedacb1cb42012d315585f67e4f972..2a79049b083a58c13c51b3f9490744aea83bb96c 100644
--- a/src/ast/prettyprinter.cc
+++ b/src/ast/prettyprinter.cc
@@ -1055,8 +1055,7 @@
     if (object->IsJSFunction()) {
       Print("JS-Function");
     } else if (object->IsJSArray()) {
-      Print("JS-array[%u]",
-            Smi::cast(JSArray::cast(object)->length())->value());
+      Print("JS-array[%u]", JSArray::cast(object)->length());
     } else if (object->IsJSObject()) {
       Print("JS-Object");
     } else {
@@ -1146,7 +1145,7 @@
   for (int i = 0; i < indent_; i++) {
     Print(". ");
   }
-  Print("%s", txt);
+  Print(txt);
 }
 
 
@@ -1523,7 +1522,7 @@
   if (node->flags() & RegExp::kSticky) buf[i++] = 'y';
   buf[i] = '\0';
   PrintIndented("FLAGS ");
-  Print("%s", buf.start());
+  Print(buf.start());
   Print("\n");
 }