BAEL-6811 remove emoji4j usage

core-java-modules/core-java-string-algorithms-3/pom.xml

@@ -23,11 +23,6 @@
             <artifactId>commons-lang3</artifactId>
             <version>${apache-commons-lang3.version}</version>
         </dependency>
-        <dependency>
-            <groupId>com.kcthota</groupId>
-            <artifactId>emoji4j</artifactId>
-            <version>6.0</version>
-        </dependency>
         <dependency>
             <groupId>com.vdurmont</groupId>
             <artifactId>emoji-java</artifactId>

core-java-modules/core-java-string-algorithms-3/src/test/java/com/baeldung/findemojis/FindEmojisUnitTest.java

@@ -11,15 +11,6 @@ import emoji4j.EmojiUtils;
 
 public class FindEmojisUnitTest {
 
-    @Test
-    public void givenAWord_whenUsingEmoji4J_thenDetectEmoji() {
-        boolean emoji = EmojiUtils.isEmoji("\uD83D\uDC3B");
-        assertTrue(emoji);
-
-        boolean notEmoji = EmojiUtils.isEmoji("w");
-        assertFalse(notEmoji);
-    }
-
     @Test
     public void givenAWord_whenUsingEmojiJava_thenDetectEmoji() {
         boolean emoji = EmojiManager.isEmoji("\uD83D\uDC3B");