fix: optimized AverageMean.js by removing redundant comments and unnecessary operations.

Author: Hridyanshu7

Diff for: Maths/AverageMean.js

@@ -13,11 +13,7 @@ const mean = (nums) => {
     throw new TypeError('Invalid Input')
   }
 
-  // This calculates the sum of all values in the 'nums' array using reduce method.
-  const sum = nums.reduce((sum, cur) => sum + cur, 0)
-
-  // Divide sum by the length of the 'nums' array.
-  return sum / nums.length
+  return nums.reduce((sum, cur) => sum + cur / nums.length, 0)
 }
 
 export { mean }