Delete a bunch of packages that are now on GitHub.

pkg/stack_trace/CHANGELOG.md

Index: pkg/stack_trace/CHANGELOG.md
diff --git a/pkg/stack_trace/CHANGELOG.md b/pkg/stack_trace/CHANGELOG.md
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-## 1.1.1
-
-* Widen the SDK constraint to include 1.7.0-dev.4.0.
-
-## 1.1.0
-
-* Unify the parsing of Safari and Firefox stack traces. This fixes an error in
-  Firefox trace parsing.
-
-* Deprecate `Trace.parseSafari6_0`, `Trace.parseSafari6_1`,
-  `Frame.parseSafari6_0`, and `Frame.parseSafari6_1`.
-
-* Add `Frame.parseSafari`.
-
-## 1.0.3
-
-* Use `Zone.errorCallback` to attach stack chains to all errors without the need
-  for `Chain.track`, which is now deprecated.
-
-## 1.0.2
-
-* Remove a workaround for [issue 17083][].
-
-[issue 17083]: http://code.google.com/p/dart/issues/detail?id=17083
-
-## 1.0.1
-
-* Synchronous errors in the [Chain.capture] callback are now handled correctly.
-
-## 1.0.0
-
-* No API changes, just declared stable.
-
-## 0.9.3+2
-
-* Update the dependency on path.
-
-* Improve the formatting of library URIs in stack traces.
-
-## 0.9.3+1
-
-* If an error is thrown in `Chain.capture`'s `onError` handler, that error is
-  handled by the parent zone. This matches the behavior of `runZoned` in
-  `dart:async`.
-
-## 0.9.3
-
-* Add a `Chain.foldFrames` method that parallels `Trace.foldFrames`.
-
-* Record anonymous method frames in IE10 as "<fn>".