Cleanup .gitignore (google#1247)

kevmoo · web-flow · commit ae72ad64bbe8 · 2022-11-15T10:12:14.000-08:00
diff --git a/.gitignore b/.gitignore
@@ -1,5 +1,3 @@
+# https://dart.dev/guides/libraries/private-files
 .dart_tool
-.packages
-.pub
-packages
 pubspec.lock
