[EDIT] 余計な機能を削除しました。

src/main/java/com/example/demo/app/domain/service/AllocationService.java

@@ -8,6 +8,4 @@ public interface AllocationService {
 	
 	public List<AllocationModel> findAll();
 	
-	public List<AllocationModel> save(List<AllocationModel> allocationModelList);
-
 }

src/main/java/com/example/demo/app/domain/service/impl/AllocationServiceImpl.java

@@ -1,6 +1,5 @@
 package com.example.demo.app.domain.service.impl;
 
-import java.util.ArrayList;
 import java.util.List;
 
 import org.springframework.stereotype.Service;
@@ -26,26 +25,5 @@ public class AllocationServiceImpl implements AllocationService {
 		return AllocationEntity.createAllocationModelList(allocationRepository.findAll());
 	}
 
-	public List<AllocationModel> save(List<AllocationModel> allocationModelList) {
-
-		List<AllocationEntity> allocationEntityList = new ArrayList<>();
-
-		allocationModelList.forEach(allocationModel -> {
-			allocationEntityList.add(
-					AllocationModel.convertTo(
-							categoryRepository.findById(allocationModel.getCategoryId()).get(),
-							courseRepository.findById(allocationModel.getCourseId()).get(),
-							allocationModel.getAllocationRatio()));
-
-		});
-
-		List<AllocationModel> result = new ArrayList<>();
-		for (AllocationEntity allocationEntity : allocationEntityList) {
-			result.add(AllocationModel.convertFrom(allocationRepository.save(allocationEntity)));
-		}
-
-		
-		return result;
-	}
 
 }