Disable jsr166.LinkedTransferQueueTest#testTransfer2 again.

This test is failing (again) on the concurrent collector
configuration.  Disable it while we investigate.

Bug: 25883050
Change-Id: I54e59a43b730c286e370b5ae01bc5713fe816b61
diff --git a/tools/libcore_failures.txt b/tools/libcore_failures.txt
index a5476f7..b323456 100644
--- a/tools/libcore_failures.txt
+++ b/tools/libcore_failures.txt
@@ -170,5 +170,11 @@
   result: EXEC_FAILED,
   names: ["org.apache.harmony.tests.java.util.WeakHashMapTest#test_keySet"],
   bug: 25437292
+},
+{
+  description: "Assertion failing on the concurrent collector configuration.",
+  result: EXEC_FAILED,
+  names: ["jsr166.LinkedTransferQueueTest#testTransfer2"],
+  bug: 25883050
 }
 ]