Remove 597-deopt-new-string from blacklist.

Bug: 36467228
Test: run 597-deopt-new-string under no-image and jit.
Change-Id: I6ad465bb3e82b4f86344d9a7f4bdffe06cf6ce1b
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 659b814..366396f 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -336,11 +336,6 @@
         "variant": "no-image & jit"
     },
     {
-        "tests": ["597-deopt-new-string"],
-        "bug": "http://b/36467228",
-        "variant": "no-image & jit"
-    },
-    {
         "tests": ["530-checker-lse",
                   "530-checker-lse2",
                   "030-bad-finalizer",