Remove unnecessary code (#4141)

src/main/java/com/thealgorithms/dynamicprogramming/MatrixChainMultiplication.java

@@ -87,7 +87,7 @@ public class MatrixChainMultiplication {
     private static void printArray(int[][] array) {
         for (int i = 1; i < size + 1; i++) {
             for (int j = 1; j < size + 1; j++) {
-                System.out.print(String.format("%7d", array[i][j]));
+                System.out.printf("%7d", array[i][j]);
             }
             System.out.println();
         }