fix: removes the blank line in imports, style correction

Author: guillermolara01

src/test/java/com/thealgorithms/greedyalgorithms/KruskalAlgorithmTest.java

@@ -6,7 +6,6 @@
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
 import java.util.List;
-
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;