Revert "Logistic regression lab notebook (issue #102)."
Revert "Logistic regression lab notebook (issue #102)."

This reverts commit 7f86599c6630c01b3d4c9c73ade9351b091b6b83.

alasdairtran/mclearn,alasdairtran/mclearn,chengsoonong/mclass-sky,alasdairtran/mclearn,chengsoonong/mclass-sky,chengsoonong/mclass-sky,chengsoonong/mclass-sky,alasdairtran/mclearn