Revert "Merge pull request #11 from KaushikRay/dev_6_child_1"

This reverts commit 4a0997e28a8c0423e90d9fc08ecfabd88ca6b893, reversing
changes made to e571280a6bdb4c4d280e91ab6f494ff6eaad844f.
PPI object on d6c1
changes in d6c3
change in same data model file in d6 c3
Merge branch 'dev_6_child_3' of github.com:KaushikRay/Testing into dev_6_child_3