Removed fixed dependencies

packages/dart_style/test/splitting/imports.unit

 40 columns                              |
 >>> does not wrap long import string (#16366)
 import 'package:some/very/long/import/path.dart';
 <<<
 import 'package:some/very/long/import/path.dart';
 >>> wrap import at as
 import 'package:some/very/long/import/path.dart' as path;
 <<<
 import 'package:some/very/long/import/path.dart'
     as path;
@@ skipping 102 matching lines @@
 import 'foo.dart'
     hide Ape, Bear
     show Ape, Bear, Cat, Dog;
 >>> force split in list
 import 'foo.dart' hide First, //
 Second;
 <<<
 import 'foo.dart'
     hide
         First, //
-        Second;
+        Second;
+>>> multiple configurations on one line
+import 'a' if (b) 'b' if (c) 'c';
+<<<
+import 'a' if (b) 'b' if (c) 'c';
+>>> if configurations don't fit, they all split
+import 'long/import/url.dart' if (b) 'b' if (c) 'c';
+<<<
+import 'long/import/url.dart'
+    if (b) 'b'
+    if (c) 'c';
+>>> do not split before uri
+import 'long/import/url.dart' if (config) 'very/long/configured/import/url.dart';
+<<<
+import 'long/import/url.dart'
+    if (config) 'very/long/configured/import/url.dart';
+>>> split before ==
+import 'some/uri.dart' if (config.name.debug == 'string') 'c';
+<<<
+import 'some/uri.dart'
+    if (config.name.debug ==
+        'string') 'c';