hg: jdk/sandbox: 8202452: Delete test files missed from commit for 8193213&8182731.

[chris.hegarty at oracle.com]

Changeset: e7b0c4f65b64
Author:    jiangli
Date:      2018-04-30 17:50 -0400
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/e7b0c4f65b64

8202452: Delete test files missed from commit for 8193213&8182731.
Summary: Deleted outdated tests.
Reviewed-by: dholmes

- test/hotspot/jtreg/runtime/appcds/SharedArchiveFile.java
- test/hotspot/jtreg/runtime/appcds/UseAppCDS.java