Merge pull request #821 from kazuki43zoo/drop-backward-compatibility-check-with-spring-5.1

Drop backward compatibility check with spring 5.1

Author: kazuki43zoo

.github/workflows/support.yaml

@@ -43,5 +43,3 @@ jobs:
           distribution: ${{ matrix.distribution }}
       - name: Test with Spring 5.2 / Spring Batch 4.2 support
         run: ./mvnw test -Dspring.version=$(./scripts/get_latest_version.sh spring-core 5.2) -Dspring-batch.version=$(./scripts/get_latest_version.sh batch/spring-batch-core 4.2)
-      - name: Test with Spring 5.1 / Spring Batch 4.1 support
-        run: ./mvnw test -Dspring.version=$(./scripts/get_latest_version.sh spring-core 5.1) -Dspring-batch.version=$(./scripts/get_latest_version.sh batch/spring-batch-core 4.1)