Revert "OF-2628: Add unit tests"

This reverts commit dc11312.

xmppserver/src/test/java/org/jivesoftware/openfire/nio/XMLLightweightParserTest.java

@@ -20,7 +20,8 @@
 
 import java.nio.charset.StandardCharsets;
 
-import static org.junit.jupiter.api.Assertions.*;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
 
 /**
  * Unit tests that verify the functionality as implemented in {@link XMLLightweightParser}
@@ -184,32 +185,4 @@ public void testOF2329SelfTerminatingWithNewline() throws Exception
         assertNotNull( result );
         assertEquals(1, result.length );
     }
-
-    @Test
-    public void testHasIllegalCharacterReferencesFindsIllegalDecimalChars() throws Exception
-    {
-        final String input = "test A test";
-        assertFalse(XMLLightweightParser.hasIllegalCharacterReferences(input));
-    }
-
-    @Test
-    public void testHasIllegalCharacterReferencesFindsLegalDecimalChars() throws Exception
-    {
-        final String input = "test  test";
-        assertTrue(XMLLightweightParser.hasIllegalCharacterReferences(input));
-    }
-
-    @Test
-    public void testHasIllegalCharacterReferencesFindsIllegalHexChars() throws Exception
-    {
-        final String input = "test A test";
-        assertFalse(XMLLightweightParser.hasIllegalCharacterReferences(input));
-    }
-
-    @Test
-    public void testHasIllegalCharacterReferencesFindsLegalHexChars() throws Exception
-    {
-        final String input = "test  test";
-        assertTrue(XMLLightweightParser.hasIllegalCharacterReferences(input));
-    }
 }