Remove unnecessary import

Author: snicoll

spring-core-test/src/test/java/org/springframework/core/test/io/support/MockSpringFactoriesLoaderTests.java

@@ -21,7 +21,6 @@
 import org.junit.jupiter.api.Test;
 
 import org.springframework.core.annotation.Order;
-import org.springframework.core.test.io.support.MockSpringFactoriesLoader;
 
 import static org.assertj.core.api.Assertions.assertThat;