Fixes #4414: Remove upgrade logic from Rudder pre-2.6 to 2.10
Merge pull request #216 from jooooooon/dev_4414/remove_upgrade_logic_from_rudder_pre_2_6_to_2_10

Fixes #4414: Remove upgrade logic from Rudder pre-2.6 to 2.10
Merge branch 'branches/rudder/2.9'
Merge branch 'branches/rudder/2.9'
Merge branch 'branches/rudder/2.9'