psa_its_remove() function

A status indicating the success/failure of the operation #PSA_SUCCESS The operation completed successfully #PSA_ERROR_DOES_NOT_EXIST The operation failed because the provided key value was not found in the storage #PSA_ERROR_NOT_PERMITTED The operation failed because the provided key value was created with PSA_STORAGE_FLAG_WRITE_ONCE #PSA_ERROR_STORAGE_FAILURE The operation failed because the physical storage has failed (Fatal error)