Re-enable all MethodHandleCombinersTest tests

Compiler fix in https://r.android.com/2238847 means these tests
should no longer fail. Issue no longer repros in manual testing.

Fix: 241199625
Test: art/tools/run-libcore-tests.sh --mode=device --variant=X64 \
        libcore.java.lang.invoke.MethodHandleCombinersTest
Change-Id: Ie272472a6c8086d467003e1a145e8239eaa70b3e
diff --git a/tools/libcore_failures.txt b/tools/libcore_failures.txt
index c31e88e..b5c220e 100644
--- a/tools/libcore_failures.txt
+++ b/tools/libcore_failures.txt
@@ -336,11 +336,5 @@
   result: ERROR,
   bug: 231439593,
   names: ["org.apache.harmony.tests.java.math.BigIntegerConstructorsTest#testConstructorPrime"]
-},
-{
-  description: "Segfault with poison build on LUCI in multi-threaded MH test",
-  result: ERROR,
-  bug: 241199625,
-  names: ["libcore.java.lang.invoke.MethodHandleCombinersTest#testThrowCatchExceptionMultiThreaded"]
 }
 ]