fix(SW-649): remove superfluous variable

components/TempDesignSystem/Form/Date/index.tsx

@@ -56,7 +56,6 @@ export default function DateSelect({ name, registerOptions = {} }: DateProps) {
     .reverse()
     .map((year) => ({ value: year, label: year.toString() }))
 
-  // Get max days based on selected month/year
   const daysInMonth =
     selectedMonth !== null && selectedYear !== null
       ? dt(`${selectedYear}-${selectedMonth + 1}-01`).daysInMonth()
@@ -82,8 +81,7 @@ export default function DateSelect({ name, registerOptions = {} }: DateProps) {
        * must subtract by 1 to get the selected month
        */
       case DateName.month:
-        const monthZeroBased = value - 1
-        newMonth = monthZeroBased
+        newMonth = value - 1
         setSelectedMonth(newMonth)
         if (selectedDay) {
           const maxDays = dt(`${newYear}-${value}-01`).daysInMonth()