Removed additional unused dto imports

src/main/java/com/nisum/ascend/inventory/repository/ProductRepository.java

 package com.nisum.ascend.inventory.repository;
 
-import com.nisum.ascend.inventory.dto.ProductDto;
 import com.nisum.ascend.inventory.model.Product;
 import org.springframework.data.mongodb.repository.Query;
 import org.springframework.data.mongodb.repository.ReactiveMongoRepository;

src/main/java/com/nisum/ascend/inventory/service/ProductService.java

 package com.nisum.ascend.inventory.service;
-import com.nisum.ascend.inventory.dto.ProductDto;
 import com.nisum.ascend.inventory.exception.ResourceNotFoundException;
 import com.nisum.ascend.inventory.model.Product;
 import org.springframework.beans.factory.annotation.Autowired;

src/test/java/com/nisum/ascend/inventory/controller/ProductControllerTest.java

 package com.nisum.ascend.inventory.controller;
 
-import com.nisum.ascend.inventory.dto.ProductDto;
 import com.nisum.ascend.inventory.model.Product;
 import com.nisum.ascend.inventory.repository.ProductRepository;
 import com.nisum.ascend.inventory.service.ProductService;