Hi Vijay,
You can remove all these processes within your process chains – which again leads to a faster and more simplified data load.
Even if you do not remove these processes in the process chains, they will simply do nothing - they are not executed and are skipped.
To know more about Obsolete Process Types, check this link:
http://help.sap.com/saphelp_nw73/helpdata/en/c1/7a2cbfe391428e9f9df7b093f42a93/frameset.htm
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Regards,
Vivek