Remove unneeded codereview.settings

pkgs/stream_channel/codereview.settings

diff --git a/pkgs/stream_channel/codereview.settings b/pkgs/stream_channel/codereview.settings
deleted file mode 100644
index 7b0a9ed..0000000
--- a/pkgs/stream_channel/codereview.settings
+++ /dev/null
@@ -1,3 +0,0 @@
-CODE_REVIEW_SERVER: https://codereview.chromium.org/
-VIEW_VC: https://github.com/dart-lang/stream_channel/commit/
-CC_LIST: reviews@dartlang.org
\ No newline at end of file