Revert "dart2js cps: Introduce GetStatic/SetStatic."

pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart

Index: pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart
diff --git a/pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart b/pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart
index 50b4b89d7944d212836c360f3309ab3136f35f49..3a17fc9a615ef9cdcff81cefd0a1b87d3fe08de6 100644
--- a/pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart
+++ b/pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart
@@ -500,17 +500,6 @@ class SubexpressionVisitor extends ExpressionVisitor<String> {
     return '$object.$field = $value';
   }
 
-  String visitGetStatic(GetStatic node) {
-    String element = node.element.name;
-    return element;
-  }
-
-  String visitSetStatic(SetStatic node) {
-    String element = node.element.name;
-    String value = visitExpression(node.value);
-    return '$element = $value';
-  }
-
   String visitCreateBox(CreateBox node) {
     return 'CreateBox';
   }