dart:io | Remove deprecated behavior of Directory('').createTemp, replaced by Directory.systemTemp.

sdk/lib/io/directory.dart

Index: sdk/lib/io/directory.dart
diff --git a/sdk/lib/io/directory.dart b/sdk/lib/io/directory.dart
index 80391d4e12257ce65fc691e8bea3e50c3b180560..95e6aa86ce831ecf844e290ee7093a3631faccb6 100644
--- a/sdk/lib/io/directory.dart
+++ b/sdk/lib/io/directory.dart
@@ -85,11 +85,6 @@ abstract class Directory implements FileSystemEntity {
    *
    * Returns a [:Future<Directory>:] that completes with the newly
    * created temporary directory.
-   *
-   * Deprecated behavior, to be removed Oct 18, 2013: If the path is the
-   * empty string, the directory is created in the default system temp
-   * directory. This capability has been moved to the static getter
-   * [systemTemp].
    */
   Future<Directory> createTemp([String template]);
 
@@ -100,11 +95,6 @@ abstract class Directory implements FileSystemEntity {
    * string is used for [prefix].
    *
    * Returns the newly created temporary directory.
-   *
-   * Deprecated behavior, to be removed Oct 18, 2013: If the path is the
-   * empty string, the directory is created in the default system temp
-   * directory. This capability has been moved to the static function
-   * [createSystemTemp].
    */
   Directory createTempSync([String template]);