Create a function that removes the first and last characters from a string.
RemoveFirstLast("hello") ➞ "ell"
RemoveFirstLast("maybe") ➞ "ayb"
RemoveFirstLast("benefit") ➞ "enefi"
RemoveFirstLast("a") ➞ "a"If the string is 2 or fewer characters long, return the string itself (See example #4).