"Fix checkstyle violations"

Author: SuprHUlk

src/main/java/com/thealgorithms/maths/ChineseRemainderTheorem.java

@@ -59,7 +59,7 @@ private static int modInverse(int a, int m) {
 
         if (m == 1) {
             return 0;
-        };
+        }
 
         while (a > 1) {
             int q = a / m;

src/test/java/com/thealgorithms/maths/ChineseRemainderTheoremTest.java

@@ -4,7 +4,6 @@
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.List;
 import org.junit.jupiter.api.Test;
 
 public class ChineseRemainderTheoremTest {