8202507: Remove IO and NIO AtomicAppend tests from problem list

[Brian Burkhalter]

Please review this simple fix for [1]. Somehow this did not make it into the patch I checked in to fix [2].

Thanks,

Brian

[1] https://bugs.openjdk.java.net/browse/JDK-8202507
[2] https://bugs.openjdk.java.net/browse/JDK-8202284

--- a/test/jdk/ProblemList.txt
+++ b/test/jdk/ProblemList.txt
@@ -510,7 +510,6 @@
 
 # jdk_io
 
-java/io/FileOutputStream/AtomicAppend.java                      8202062 macosx-all
 java/io/pathNames/GeneralWin32.java                             8180264 windows-all
 
 java/io/FileInputStream/UnreferencedFISClosesFd.java            8202292 linux-all
@@ -552,8 +551,6 @@
 
 java/nio/channels/DatagramChannel/ChangingAddress.java          7141822 macosx-all
 
-java/nio/channels/FileChannel/AtomicAppend.java                 8202062 macosx-all
-
 java/nio/channels/Selector/Wakeup.java                          6963118 windows-all
 
 java/nio/file/WatchService/Basic.java                           7158947 solaris-all Solaris 11