#1096. NPSP Data Importer fails to create or match contacts if Email not provided and Configuration settings say to match by Email.
Revert " #1096. NPSP Data Importer fails to create or match contacts if Email not provided and Configuration settings say to match by Email."

This reverts commit 07604a62b70a5f437f6214446532adb0caabd9dd.
#1095. NPSP Data Import fails to import contact records if lastname is not provided on Contact1 or Contact2.
#1096. NPSP Data Importer fails to create or match contacts if Email not provided and Configuration settings say to match by Email.