Remove some summary TODOs that have already been addressed.

pkg/analyzer/lib/src/summary/format.dart

Index: pkg/analyzer/lib/src/summary/format.dart
diff --git a/pkg/analyzer/lib/src/summary/format.dart b/pkg/analyzer/lib/src/summary/format.dart
index 7a1508a12fe7cfba67b7b5af90fab53a0ee2f8a5..d594f0fccef2c40a4daae35fb6c406d18e1bacc7 100644
--- a/pkg/analyzer/lib/src/summary/format.dart
+++ b/pkg/analyzer/lib/src/summary/format.dart
@@ -4471,9 +4471,6 @@ class UnlinkedPublicNameBuilder extends Object with _UnlinkedPublicNameMixin imp
  * Unlinked summary information about a specific name contributed by a
  * compilation unit to a library's public namespace.
  *
- * TODO(paulberry): add a count of generic parameters, so that resynthesis
- * doesn't have to peek into the library to obtain this info.
- *
  * TODO(paulberry): some of this information is redundant with information
  * elsewhere in the summary.  Consider reducing the redundancy to reduce
  * summary size.