MAE-380: Remove APIs and hook that will not be used for new UI

Overview

THIS PR HAS NOT BEEN MERGED AS THE WORKSTREAM BRANCH WAS RE-STORED TO THE COMMITS BEFORE THIS PR IS MERGED. NEW PR IS CREATED. https://github.com/compucorp/uk.co.compucorp.membershipextras/pull/298

~~This PR is to remove Membership type APIs that were created for getting details membership types detail that used for calculating prorata and updating instalment.~~

~~These codes are not currently used on the current version of membership extras and will not be used for the new UI on Membership Extra version 5.~~

~~## Before~~

~~Below APIs were used on PaymentPlanToggler form but the code was commented out~~ ~~- Getinstalmentamounts~~ ~~- Getinstalmentamountsforpriceset~~

~~https://github.com/compucorp/uk.co.compucorp.membershipextras/blob/master/templates/CRM/Member/Form/PaymentPlanToggler.tpl#L117~~

   if (instalmentFrequency == 1 && instalmentFrequencyUnit == 'month') {
          //Commented out for now till the BE functionality to store these values are in place.
          // updateInstalmentAmounts();
    }

~~Below APIs were used in prorata form hook.~~

~~- Getproratedamountforpriceset.php~~ ~~- Getdatesformembershiptype.php ~~ ~~- Getproratedamount.php~~

~~## After ~~

~~- APIs will be deleted as they are no longer in used.~~ ~~- MembershipAmountProRata hook is also deleted as they will not be used. ~~

~~## Technical Details~~

~~Why delete this API instead of re-using them for the new UI? This UI is actually returning values of membership type and the calculation is done on the front end which is currently incorrect.~~

One of the requirements for the UI changes is to calculate the schedule / instalment on the backend and only use the front end to display the instalment. In order to achieve this, the new set of APIs will be created.

compucorp / uk.co.compucorp.membershipextras

MAE-380: Remove APIs and hook that will not be used for new UI #297

Overview