refactor: 닉네임 수정로직 제거

Author: sapiens2000

src/main/java/com/example/log4u/domain/user/dto/UserProfileMakeRequestDto.java

@@ -1,12 +1,6 @@
 package com.example.log4u.domain.user.dto;
 
-import jakarta.validation.constraints.NotEmpty;
-import jakarta.validation.constraints.Size;
-
 public record UserProfileMakeRequestDto(
-	@NotEmpty
-	@Size(min = 2, max = 20, message = "닉네임은 2자 이상 20자 이하로 입력해주세요.")
-	String nickname,
 	String statusMessage,
 	String profileImage
 ) {

src/main/java/com/example/log4u/domain/user/entity/User.java

@@ -72,7 +72,6 @@ public void updateMyProfile(UserProfileUpdateRequestDto userProfileUpdateRequest
 	}
 
 	public void createMyProfile(UserProfileMakeRequestDto userProfileMakeRequestDto) {
-		this.nickname = userProfileMakeRequestDto.nickname();
 		this.statusMessage = userProfileMakeRequestDto.statusMessage();
 		this.profileImage = userProfileMakeRequestDto.profileImage();
 		this.role = "ROLE_USER";