Revert "Use interceptors for is-checks (version 2)."

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 b310650a199ef9228614544c8bbeda1e72a4319d..01b5847cdb3073f8153280f6368fee513bed1c72 100644
--- a/pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart
+++ b/pkg/compiler/lib/src/tree_ir/tree_ir_tracer.dart
@@ -498,15 +498,6 @@ class SubexpressionVisitor extends ExpressionVisitor<String> {
     return '$element = $value';
   }
 
-  String visitGetTypeTestProperty(GetTypeTestProperty node) {
-    String object = visitExpression(node.object);
-    if (usesInfixNotation(node.object)) {
-      object = '($object)';
-    }
-    // TODO(sra): Fix up this.
-    return '$object."is-${node.dartType}"';
-  }
-
   String visitCreateBox(CreateBox node) {
     return 'CreateBox';
   }
@@ -620,4 +611,4 @@ class Names {
     }
     return name;
   }
-}
+}