Remove old test case from HttpConnectionTest (#12472)

jetty-core/jetty-server/src/test/java/org/eclipse/jetty/server/HttpConnectionTest.java

@@ -53,7 +53,6 @@
 import org.hamcrest.Matchers;
 import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
@@ -865,27 +864,6 @@ public void testBadURIencoding() throws Exception
         checkContains(response, 0, "HTTP/1.1 400");
     }
 
-    @Test
-    @Disabled("review this test. seems a security issue to fallback from utf-8 to iso-1, was there a reason to do that?")
-    public void testBadUTF8FallsbackTo8859() throws Exception
-    {
-        _server.start();
-        LOG.info("badMessage: bad encoding expected ...");
-        String response;
-
-        response = _connector.getResponse("GET /foo/bar%c0%00 HTTP/1.1\r\n" +
-            "Host: localhost\r\n" +
-            "Connection: close\r\n" +
-            "\r\n");
-        checkContains(response, 0, "HTTP/1.1 400");
-
-        response = _connector.getResponse("GET /bad/utf8%c1 HTTP/1.1\r\n" +
-            "Host: localhost\r\n" +
-            "Connection: close\r\n" +
-            "\r\n");
-        checkContains(response, 0, "HTTP/1.1 200"); //now fallback to iso-8859-1
-    }
-
     @Test
     public void testAutoFlush() throws Exception
     {