Remove warning stability warning

December 1, 2018 has come and gone.

If the timeframe should change that's fine; feel free to reject this and just update the date.

Change-Id: If6aaee30340ee0bfde7e578e054c5b8bc910a5b9
GitHub-Last-Rev: ec781ca1374a010168bc4a457d2ea5d0c023f8dc
GitHub-Pull-Request: golang/tools#64
Reviewed-on: https://go-review.googlesource.com/c/155237
Reviewed-by: Michael Matloob <matloob@golang.org>
diff --git a/go/packages/doc.go b/go/packages/doc.go
index c8782cb..0ec0fab 100644
--- a/go/packages/doc.go
+++ b/go/packages/doc.go
@@ -5,11 +5,6 @@
 /*
 Package packages loads Go packages for inspection and analysis.
 
-Note: Though this package is ready for widespread use, we may make minor
-breaking changes if absolutely necessary. Any such change will be
-announced on golang-tools@ at least one week before it is committed. No
-more breaking changes will be made after December 1, 2018.
-
 The Load function takes as input a list of patterns and return a list of Package
 structs describing individual packages matched by those patterns.
 The LoadMode controls the amount of detail in the loaded packages.