Removed unnecessary test case

Author: rjeberhard

util/src/test/java/io/kubernetes/client/ExecTest.java

@@ -40,13 +40,6 @@ public void setup() throws IOException {
     client = ClientBuilder.defaultClient();
   }
 
-  @Test
-  public void testExit0NoMessage() {
-    InputStream inputStream = new ByteArrayInputStream(new byte[0]);
-    int exitCode = Exec.parseExitCode(client, inputStream);
-    assertEquals(0, exitCode);
-  }
-
   @Test
   public void testExit0() {
     InputStream inputStream =