Patch print directly in corelib instead of going through coreimpl.

lib/compiler/implementation/lib/coreimpl_patch.dart

Index: lib/compiler/implementation/lib/coreimpl_patch.dart
diff --git a/lib/compiler/implementation/lib/coreimpl_patch.dart b/lib/compiler/implementation/lib/coreimpl_patch.dart
index b274c6ed4235e79301f2c95424764beb465d3df0..d417582887ac0cffab9ef916861fe79873866465 100644
--- a/lib/compiler/implementation/lib/coreimpl_patch.dart
+++ b/lib/compiler/implementation/lib/coreimpl_patch.dart
@@ -4,18 +4,6 @@
 
 // Patch file for dart:coreimpl classes.
 
-// Patch for 'print' function.
-patch class PrintImplementation {
-  patch static void print(var obj) {
-    if (obj is String) {
-      Primitives.printString(obj);
-    } else {
-      Primitives.printString(obj.toString());
-    }
-  }
-}
-
-
 // Patch for String implementation.
 // TODO(ager): Split out into date_patch.dart and allow #source
 // in patch files?