[refactor] Moved 'powerOfTwo' to 'isPowerOfTwo' TS file

utils/HelperFunctions.js

@@ -110,17 +110,10 @@ function compareArrays(a1, a2) {
     return true;
 }
 
-//Returns bool indicating whether or not its a power of 2
-function powerOfTwo(n) {
-    if (isNaN(n)) {return false;}
-    return n && (n & (n-1)) === 0;
-}
-
 export {sizeOfObject,
         clearObject,
         clearEventListeners,
         compareArrays,
-        powerOfTwo,
         clearEventListenersEl,
         removeElement,
         createAccordionElement,