def remove_digit(num):
	to_remove = sorted(set(str(num)))[-2]
	print(type(num)(str(num).replace(to_remove, "")))
	
remove_digit(51235)
remove_digit(13471346)
remove_digit(12351.51)
remove_digit(150913.1165)
remove_digit(155556113.000)
remove_digit(0.0)
remove_digit(0.01)
remove_digit(10)