불필요 메서드 제거

Author: bs8841

src/main/java/com/sprint/mission/discodeit/JavaApplication.java

@@ -179,9 +179,9 @@ private static void messageMenu(Scanner scanner, JCFMessageService messageServic
             System.out.println("5. 메시지 삭제");
             System.out.println("0. 초기 화면으로");
             System.out.println("번호를 입력하세요");
-            String choice = scanner.nextLine();
+            String select = scanner.nextLine();
 
-            switch (choice) {
+            switch (select) {
                 case "1":
                     System.out.print("보낼 메시지 내용");
                     String content = scanner.nextLine();

src/main/java/com/sprint/mission/discodeit/entity/Message.java

@@ -5,19 +5,13 @@
 
 public class Message extends BaseEntity {
     private String msgContent;
-    private final UUID senderId;
     private final UUID channelId;
 
     public Message(String msgContent, UUID senderId, UUID channelId) {
         this.msgContent = msgContent;
-        this.senderId = senderId;
         this.channelId = channelId;
     }
 
-    public String getMsgContent() {
-        return msgContent;
-    }
-
     public void updateMsgContent(String msgContent) {
         this.msgContent = msgContent;
         updateTime();

src/main/java/com/sprint/mission/discodeit/service/jcf/JCFUserService.java

@@ -42,9 +42,7 @@ public void deleteUser(UUID userId) {
         data.remove(userId);
         channelServiceSet.forEach(service -> {
             service.getAllChannels().forEach(channel -> {
-                if (channel.getUserIds().contains(userId)) {
-                    channel.getUserIds().remove(userId);
-                }
+                channel.getUserIds().remove(userId);
             });
         });
     }