Removed unused code from Controller class

Author: MithunRamKumar07

SpringBoot/jpa-jdbc-transactional-sorting-pagination/src/main/java/com/mithun/springboot/transactional/controller/EmployeeController.java

@@ -1,7 +1,5 @@
 package com.mithun.springboot.transactional.controller;
 
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
 import com.mithun.springboot.transactional.model.Employee;
 import com.mithun.springboot.transactional.model.EmployeeDetailsDto;
 import com.mithun.springboot.transactional.service.EmployeeService;
@@ -13,8 +11,6 @@
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.*;
 
-import java.util.List;
-
 @Slf4j
 @RestController
 @RequestMapping(value = "/employees")
@@ -24,9 +20,6 @@ public class EmployeeController {
     @Autowired
     EmployeeService employeeService;
 
-    @Autowired
-    ObjectMapper objectMapper;
-
     @PostMapping("/save")
     public String saveEmployees(@RequestBody EmployeeDetailsDto employeeDetailsDto){
          employeeService.saveEmployees(employeeDetailsDto);