JAVA-13636 Minor cleanup

testing-modules/mockito-simple/pom.xml

@@ -58,7 +58,6 @@
     </build>
 
     <properties>
-        <spring-boot.version>2.6.4</spring-boot.version>
         <spring-framework.version>5.3.20</spring-framework.version>
         <!-- testing -->
         <mockito.version>4.6.1</mockito.version>        

testing-modules/mockito-simple/src/test/java/com/baeldung/junit5/mockito/UserServiceUnitTest.java

@@ -28,17 +28,17 @@ import com.baeldung.junit5.mockito.service.UserService;
 @ExtendWith(MockitoExtension.class)
 class UserServiceUnitTest {
 
-    UserService userService;
-    
-    SettingRepository settingRepository;
-    
-    @Mock
-    UserRepository userRepository;
-    
-    @Mock
-    MailClient mailClient;
+    private UserService userService;
 
-    User user;
+    private SettingRepository settingRepository;
+
+    @Mock
+    private UserRepository userRepository;
+
+    @Mock
+    private MailClient mailClient;
+
+    private User user;
 
     @BeforeEach
     void init(@Mock SettingRepository settingRepository) {