Update src/main/java/com/thealgorithms/dynamicprogramming/LongestArithmeticSubsequence.java

Co-authored-by: Piotr Idzik <[email protected]>

Author: tejaswi0910

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

@@ -17,7 +17,6 @@ private LongestArithmeticSubsequence() {
      * @return the length of the longest arithmetic subsequence
      */
     public static int getLongestArithmeticSubsequenceLength(int[] nums) {
-        // Throws an exception if nums is null.
         if (nums == null) {
             throw new IllegalArgumentException("Input array cannot be null");
         }