Remove dead code.

lib/compiler/implementation/ssa/codegen.dart

Index: lib/compiler/implementation/ssa/codegen.dart
diff --git a/lib/compiler/implementation/ssa/codegen.dart b/lib/compiler/implementation/ssa/codegen.dart
index 05ff7e857071e4dbdd239f34c0c3723454c37c94..8fbd1cdd05a5b9790808d14fac8656c339b6306a 100644
--- a/lib/compiler/implementation/ssa/codegen.dart
+++ b/lib/compiler/implementation/ssa/codegen.dart
@@ -1293,10 +1293,6 @@ class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
   }
 
   visitFieldSet(HFieldSet node) {
-    // This method may introduce variable declarations in the JS code.
-    // If we are generating an expression, those variable declarations
-    // must be delayed until later.
-    bool delayDeclaration = false;
     String name;
     if (node.receiver !== null) {
       name =
@@ -1311,7 +1307,6 @@ class SsaCodeGenerator implements HVisitor, HBlockInformationVisitor {
       name = JsNames.getValid(node.element.name.slowToString());
       declareVariable(name);
     }
-    if (delayDeclaration) delayedVarDecl = delayedVarDecl.prepend(name);
     buffer.add(' = ');
     use(node.value, JSPrecedence.ASSIGNMENT_PRECEDENCE);
     if (node.receiver !== null) {