cleanup

src/app/utils/numberUtils.ts

@@ -1,13 +1,3 @@
-/**
- * Checks if the given value is an number.
- *
- * @param value the number
- * @returns true if value is a number, otherwise false
- */
-export function isNumber(value: any): boolean {
-  return !isNaN(value);
-}
-
 /**
  * Formats a number to a string with commas
  *