az feedback auto-generates most of the information requested below, as of CLI version 2.0.62
az ad app permission delete --id <> --api <>
Azure Ad Graph API is no longer supported ,need the Microsoft graph API equivalent of the command to delete API permissions from App registrations
Run this on Azure powershell az ad app permission delete --id <> --api <>
The requested API permission should had been deleted
Azure powershell , owner of the application
Looking for Azure CLI commands in Microsoft Graph API to delete API permissions from App registration.
Documentation missing this scenario/unclear - https://docs.microsoft.com/en-us/cli/azure/microsoft-graph-migration
Current error -
This command or command group has been migrated to Microsoft Graph API. Please carefully review all breaking changes introduced during this migration: https://docs.microsoft.com/cli/azure/microsoft-graph-migration
The size of the object has exceeded its limit. Please reduce the number of values and retry your request.

az ad app permission delete --id <> --api <>
Azure Ad Graph API is no longer supported ,need the Microsoft graph API equivalent of the command to delete API permissions from App registrations
Run this on Azure powershell az ad app permission delete --id <> --api <>
The requested API permission should had been deleted
Azure powershell , owner of the application
Looking for Azure CLI commands in Microsoft Graph API to delete API permissions from App registration.
Documentation missing this scenario/unclear - https://docs.microsoft.com/en-us/cli/azure/microsoft-graph-migration
Current error -
This command or command group has been migrated to Microsoft Graph API. Please carefully review all breaking changes introduced during this migration: https://docs.microsoft.com/cli/azure/microsoft-graph-migration
The size of the object has exceeded its limit. Please reduce the number of values and retry your request.