clear_loanee_variables_effect

clear_loanee_variables_effect = {
	remove_variable = loan_amount_owed
	remove_variable = loan_holder
	if = {
		limit = { has_character_flag = promised_repayment }
		remove_character_flag = promised_repayment
	}
	if = {
		limit = { exists = var:has_reminded_about_loan }
		remove_variable = has_reminded_about_loan
	}
	if = {
		limit = { exists = var:original_loan_holder }
		remove_variable = original_loan_holder
	}
	if = {
		limit = { exists = var:original_lender }
		remove_variable = original_lender
	}
}

As written in game/common/scripted_effects/00_scripted_effects.txt.