Revert "try 'single connection across multiple threads' for #77"
Revert "try 'single connection across multiple threads' for #77"

This reverts commit 76e4aa50d0c035fa05ffc6eb3b6e04f40c95472d.

WIPACrepo/iceprod,WIPACrepo/iceprod,WIPACrepo/iceprod,WIPACrepo/iceprod