Set sdk_version for prebuilt_api to scope

Remove old TODO setting sdk_version to "current" as the associated bug
appears to have been fixed.

Test: m checkapi
Change-Id: I7737fbd17d2f54fc4578e04d07875b4b8d408ef9
diff --git a/java/prebuilt_apis.go b/java/prebuilt_apis.go
index 999c72f..b10e6c7 100644
--- a/java/prebuilt_apis.go
+++ b/java/prebuilt_apis.go
@@ -83,8 +83,7 @@
 	}{}
 	props.Name = proptools.StringPtr(prebuiltApiModuleName(mctx, module, scope, apiver))
 	props.Jars = append(props.Jars, path)
-	// TODO(hansson): change to scope after migration is done.
-	props.Sdk_version = proptools.StringPtr("current")
+	props.Sdk_version = proptools.StringPtr(scope)
 	props.Installable = proptools.BoolPtr(false)
 
 	mctx.CreateModule(ImportFactory, &props)