Revert "New, more validating, parser for URI." and follow-up patches.

pkg/json_rpc_2/test/server/parameters_test.dart

Index: pkg/json_rpc_2/test/server/parameters_test.dart
diff --git a/pkg/json_rpc_2/test/server/parameters_test.dart b/pkg/json_rpc_2/test/server/parameters_test.dart
index 4afe0724c0031f161274b99d3c3c0332a83d3dbc..49e457355d084a1e0466bb72718cf5cacb5a50be 100644
--- a/pkg/json_rpc_2/test/server/parameters_test.dart
+++ b/pkg/json_rpc_2/test/server/parameters_test.dart
@@ -262,9 +262,7 @@ void main() {
       expect(() => parameters['invalid-uri'].asUri,
           throwsInvalidParams('Parameter "invalid-uri" for method "foo" must '
               'be a valid URI, but was "http://[::1".\n'
-              'Unmatched [ in host name at position 7.\n'
-              'http://[::1\n'
-              '       ^'));
+              'Bad end of IPv6 host'));
     });
 
     group("with a nested parameter map", () {