Drop unneeded directives and redundant type checks (dart-archive/gcloud#126)

Fixes CI

Author: kevmoo

pkgs/gcloud/lib/db.dart

@@ -4,7 +4,6 @@
 
 library gcloud.db;
 
-import 'dart:async';
 import 'dart:collection';
 // dart:core is imported explicitly so it is available at top-level without
 //   the `core` prefix defined below.
@@ -23,9 +22,9 @@ import 'service_scope.dart' as ss;
 part 'src/db/annotations.dart';
 part 'src/db/db.dart';
 part 'src/db/exceptions.dart';
-part 'src/db/models.dart';
 part 'src/db/model_db.dart';
 part 'src/db/model_db_impl.dart';
+part 'src/db/models.dart';
 
 const Symbol _dbKey = #gcloud.db;
 

pkgs/gcloud/test/datastore/e2e/datastore_test_impl.dart

@@ -110,7 +110,6 @@ void runTests(Datastore datastore, String? namespace) {
     if (key.elements.isEmpty) return false;
 
     for (var element in key.elements) {
-      if (element.kind is! String) return false;
       if (!ignoreIds) {
         if (element.id == null ||
             (element.id is! String && element.id is! int)) {

pkgs/gcloud/test/db/e2e/metamodel_test_impl.dart

@@ -7,7 +7,6 @@ library metamodel_test;
 import 'dart:async';
 
 import 'package:gcloud/datastore.dart';
-import 'package:gcloud/datastore.dart' show Key, Partition;
 import 'package:gcloud/db.dart' as db;
 import 'package:gcloud/db/metamodel.dart';
 import 'package:test/test.dart';

pkgs/gcloud/test/storage/e2e_test.dart

@@ -67,7 +67,6 @@ void main() {
         return storage.bucketInfo(bucketName).then(expectAsync1((info) {
           expect(info.bucketName, bucketName);
           expect(info.etag, isNotNull);
-          expect(info.created is DateTime, isTrue);
           expect(info.id, isNotNull);
           return storage.deleteBucket(bucketName).then(expectAsync1((result) {
             expect(result, isNull);
@@ -233,10 +232,8 @@ void main() {
             return bucket.info(objectName).then(expectAsync1((info) {
               expect(info.name, objectName);
               expect(info.length, bytes.length);
-              expect(info.updated is DateTime, isTrue);
               expect(info.md5Hash, isNotNull);
               expect(info.crc32CChecksum, isNotNull);
-              expect(info.downloadLink is Uri, isTrue);
               expect(info.generation.objectGeneration, isNotNull);
               expect(info.generation.metaGeneration, 1);
               expect(info.metadata.contentType, metadata.contentType);

pkgs/gcloud/test/storage/storage_test.dart

@@ -1013,11 +1013,8 @@ void main() {
         bucket.info(objectName).then(expectAsync1((ObjectInfo info) {
           expect(info.name, objectName);
           expect(info.metadata.acl!.entries.length, 3);
-          expect(info.metadata.acl!.entries[0] is AclEntry, isTrue);
           expect(info.metadata.acl!.entries[0].scope is StorageIdScope, isTrue);
-          expect(info.metadata.acl!.entries[1] is AclEntry, isTrue);
           expect(info.metadata.acl!.entries[1].scope is AccountScope, isTrue);
-          expect(info.metadata.acl!.entries[2] is AclEntry, isTrue);
           expect(info.metadata.acl!.entries[2].scope is OpaqueScope, isTrue);
         }));
       });