Remove old debug output.

pkg/analyzer/lib/src/generated/incremental_resolver.dart

Index: pkg/analyzer/lib/src/generated/incremental_resolver.dart
diff --git a/pkg/analyzer/lib/src/generated/incremental_resolver.dart b/pkg/analyzer/lib/src/generated/incremental_resolver.dart
index 0db8d3e931bbc0c0dc8fafb39dd7a0a027c33baa..4b4450021ae4b99376f8caebe227eeabfbd00ff9 100644
--- a/pkg/analyzer/lib/src/generated/incremental_resolver.dart
+++ b/pkg/analyzer/lib/src/generated/incremental_resolver.dart
@@ -188,13 +188,6 @@ class DeclarationMatcher extends RecursiveAstVisitor {
     _assertEquals(node.constKeyword != null, element.isConst);
     _assertEquals(node.factoryKeyword != null, element.isFactory);
     _assertCompatibleParameters(node.parameters, element.parameters);
-    // TODO(scheglov) debug null Location
-    if (element != null) {
-      if (element.context == null || element.source == null) {
-        logger.log(
-            'Bad constructor element $element for $node in ${node.parent}');
-      }
-    }
     // matches, update the existing element
     ExecutableElement newElement = node.element;
     node.element = element;