make the code ready for pull request

rozi26 · rozi26 · commit 799ba6186f53 · 2024-05-02T15:57:32.000+03:00
diff --git a/src/main/java/com/thealgorithms/maths/ComplexNumberUtil.java b/src/main/java/com/thealgorithms/maths/ComplexNumberUtil.java
@@ -1,7 +1,5 @@
 package com.thealgorithms.maths;
 
-import java.math.BigDecimal;
-
 public class ComplexNumberUtil {
 
     public static class ComplexNumber {
