Left overs from refactor in data_util/uncertainty.py?

[llimeht]

While looking at other failures to build... I spotted that sasdata/data_util/uncertainty.py contains functions for log and exp that are outside a class context but use self.

sasdata/sasdata/data_util/uncertainty.py

Lines 200 to 205 in d7d9411

	def log(val):
	return self.log()
	def exp(val):
	return self.exp()

Presumably just leftovers from a previous refactoring?