ART: Disable one more libcore test failing on hammerhead

One more test from the harmony package fails due to the locale issue
on hammerhead. This patch disables it.

Change-Id: I1f3941bfcc20d5b2e23fe5ae963676138eecccb8
diff --git a/tools/libcore_failures.txt b/tools/libcore_failures.txt
index c7d6ea2..a09d86f 100644
--- a/tools/libcore_failures.txt
+++ b/tools/libcore_failures.txt
@@ -59,7 +59,8 @@
           "libcore.java.text.SimpleDateFormatTest#testDstZoneNameWithNonDstTimestamp",
           "libcore.java.text.SimpleDateFormatTest#testDstZoneWithNonDstTimestampForNonHourDstZone",
           "libcore.java.text.SimpleDateFormatTest#testNonDstZoneNameWithDstTimestamp",
-          "libcore.java.text.SimpleDateFormatTest#testNonDstZoneWithDstTimestampForNonHourDstZone"]
+          "libcore.java.text.SimpleDateFormatTest#testNonDstZoneWithDstTimestampForNonHourDstZone",
+          "org.apache.harmony.tests.java.text.SimpleDateFormatTest#test_parseLjava_lang_StringLjava_text_ParsePosition"]
 },
 {
   description: "Failing due to switched off network stack on volantisg.",