Removed Chai.js mention from Bonfire

seed/challenges/basic-bonfires.json

@@ -273,7 +273,6 @@
       "description": [
         "Return an array consisting of the largest number from each provided sub-array. For simplicity, the provided array will contain exactly 4 sub-arrays.",
         "Remember, you can iterate through an array with a simple for loop, and access each member with array syntax arr[i] .",
-        "If you are writing your own Chai.js tests, be sure to use a deep equal statement instead of an equal statement when comparing arrays.",
         "Remember to use <a href=\"//github.com/FreeCodeCamp/freecodecamp/wiki/How-to-get-help-when-you-get-stuck\" target=\"_blank\">Read-Search-Ask</a> if you get stuck. Write your own code."
       ],
       "challengeSeed": [