Do the Mormons have a 3 witness rule?

Esse quam videri

Moroni 6:7 states,
' And they were strict to observe that there should be no iniquity among them; and whoso was found to commit iniquity, and three witnesses of the church did condemn them before the elders, and if they repented not, and confessed not, their names were blotted out, and they were not numbered among the people of Christ.'
Any comments?
Village Idiot

The two to three witness rule arose in the ancient world as protection for those who were wrongly accused of a crime. Nevertheless it is very problematic for the obvious reason that most crimes have one or no witness.