Revert "added session id authentication"
Revert "added session id authentication"

This reverts commit 2dda270044f31aed3b7a64193a52e33a25567628.

MG-RAST/MG-RAST,wilke/MG-RAST,teharrison/MG-RAST,wilke/MG-RAST,MG-RAST/MG-RAST,paczian/MG-RAST,wilke/MG-RAST,paczian/MG-RAST,teharrison/MG-RAST,teharrison/MG-RAST,wilke/MG-RAST,teharrison/MG-RAST,paczian/MG-RAST,MG-RAST/MG-RAST,wilke/MG-RAST,teharrison/MG-RAST,paczian/MG-RAST,wilke/MG-RAST,MG-RAST/MG-RAST,wilke/MG-RAST,paczian/MG-RAST,teharrison/MG-RAST,paczian/MG-RAST,MG-RAST/MG-RAST