Fix removing enterprise suggestion certificate Make when remove a enterprise suggestion, use the internal config object to remove ketStore. Which has certificate alias. Bug: 150500247 Test: atest com.android.server.wifi Merged-In: Id020e16fb6c26f38eb217248f7296b9ae4b0e781 Change-Id: I8015d87599d843e022805ce69fd5a4eae4d7b066