Pull args, intl, logging, shelf, and source_maps out of the SDK.

pkg/intl/test/message_extraction/print_to_list.dart

Index: pkg/intl/test/message_extraction/print_to_list.dart
diff --git a/pkg/intl/test/message_extraction/print_to_list.dart b/pkg/intl/test/message_extraction/print_to_list.dart
deleted file mode 100644
index f5446d488abafd9d3f3f74418e6edfd0a37d4104..0000000000000000000000000000000000000000
--- a/pkg/intl/test/message_extraction/print_to_list.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-/// This provides a way for a test to print to an internal list so the
-/// results can be verified rather than writing to and reading a file.
-
-library print_to_list.dart;
-
-List<String> lines = [];
-
-void printOut(String s) {
-  lines.add(s);
-}