Remove support for SDK dependencies.

utils/tests/pub/install/pub_install_test.dart

Index: utils/tests/pub/install/pub_install_test.dart
diff --git a/utils/tests/pub/install/pub_install_test.dart b/utils/tests/pub/install/pub_install_test.dart
index b82565a71f6096c6d0d1599936581cb6f77282b2..f01bc8fe7101b3a2264834ac34d6696aa0091e1c 100644
--- a/utils/tests/pub/install/pub_install_test.dart
+++ b/utils/tests/pub/install/pub_install_test.dart
@@ -67,17 +67,13 @@ main() {
   });
 
   integration('does not add a package if it does not have a "lib" directory', () {
-    // Using an SDK source, but this should be true of all sources.
-    dir(sdkPath, [
-      dir('pkg', [
-        dir('foo', [
-          libPubspec('foo', '0.0.0-not.used')
-        ])
-      ])
+    // Using a path source, but this should be true of all sources.
+    dir('foo', [
+      libPubspec('foo', '0.0.0-not.used')
     ]).scheduleCreate();
 
     dir(appPath, [
-      pubspec({"name": "myapp", "dependencies": {"foo": {"sdk": "foo"}}})
+      pubspec({"name": "myapp", "dependencies": {"foo": {"path": "../foo"}}})
     ]).scheduleCreate();
 
     schedulePub(args: ['install'],