Temporarily disable CheckCastDebugTestRunner.

Change-Id: Icc25669bf2f0143ce5deab0c69ae998f346758c8
diff --git a/src/test/java/com/android/tools/r8/ir/optimize/checkcast/CheckCastDebugTestRunner.java b/src/test/java/com/android/tools/r8/ir/optimize/checkcast/CheckCastDebugTestRunner.java
index 1eddbd3..d7a5732 100644
--- a/src/test/java/com/android/tools/r8/ir/optimize/checkcast/CheckCastDebugTestRunner.java
+++ b/src/test/java/com/android/tools/r8/ir/optimize/checkcast/CheckCastDebugTestRunner.java
@@ -29,6 +29,7 @@
 import java.util.Arrays;
 import java.util.Collection;
 import org.junit.Before;
+import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.Parameterized;
@@ -76,6 +77,7 @@
     assertThat(classSubject, isPresent());
   }
 
+  @Ignore("todo: jsjeon")
   @Test
   public void test_differentLocals() throws Throwable {
     ClassSubject classSubject = inspector.clazz(MAIN);
@@ -129,6 +131,7 @@
     );
   }
 
+  @Ignore("todo: jsjeon")
   @Test
   public void test_sameLocal() throws Throwable {
     ClassSubject classSubject = inspector.clazz(MAIN);