RFR(xs) 8163500: JShell: ProblemList.txt update: 8139872 and 8080843 fixed

[Robert Field]

Bug:
     https://bugs.openjdk.java.net/browse/JDK-8163500

Diff:
--- a/test/ProblemList.txt      Mon Aug 08 11:48:02 2016 -0700
+++ b/test/ProblemList.txt      Tue Aug 09 10:04:46 2016 -0700
@@ -54,8 +54,6 @@
  #
  # jshell

-jdk/jshell/EditorPadTest.java 8139872    generic-all    test requires a 
non-headless environment
-jdk/jshell/ExternalEditorTest.java 8080843    generic-all    invalid 
key error occurs when external editor is used.
  jdk/jshell/ToolBasicTest.java 8139873    generic-all    JShell tests 
failing

  ###########################################################################


Referenced bugs:
https://bugs.openjdk.java.net/browse/JDK-8139872
https://bugs.openjdk.java.net/browse/JDK-8080843

Thanks,
Robert