Create a function that takes a string, removes all "special" characters (e.g. ., !, @, #, $, %, ^, &, \, *, (, )) and returns the new string. The only non-alphanumeric characters allowed are dashes -, underscores _ and spaces.
RemoveSpecialCharacters("The quick brown fox!") ➞ "The quick brown fox"
RemoveSpecialCharacters("%fd76$fd(-)6GvKlO.") ➞ "fd76fd-6GvKlO"
RemoveSpecialCharacters("D0n$c sed 0di0 du1") ➞ "D0nc sed 0di0 du1"N/A