Skip 2263-method-trace-jit on jvm

2263-method-trace-jit is to test JITed code with method tracing and uses
ensureJitCompiled. So skip it on JVM. There is 988-method-trace to test
without JIT.

Test: art/test.py -t 2263 --jvm
Change-Id: Ib7a720e44d42e3eef7bbcf2ef5cf6af519933b13
diff --git a/test/knownfailures.json b/test/knownfailures.json
index 92a5fc8..14d72b9 100644
--- a/test/knownfailures.json
+++ b/test/knownfailures.json
@@ -1221,7 +1221,8 @@
                   "2240-tracing-non-invokable-method",
                   "2246-trace-stream",
                   "2254-class-value-before-and-after-u",
-                  "2261-badcleaner-in-systemcleaner"],
+                  "2261-badcleaner-in-systemcleaner",
+	          "2263-method-trace-jit"],
         "variant": "jvm",
         "description": ["Doesn't run on RI."]
     },