Revert "fread - 23st attempt for over map on Windows"
Revert "fread - 23st attempt for over map on Windows"

This reverts commit dfa000004eac0726eafa0d2e3f3ad5cafc27be4f.

Rdatatable/data.table,vlulla/data.table,vlulla/data.table,Rdatatable/data.table,jangorecki/data.table,jangorecki/data.table,jangorecki/data.table,Rdatatable/data.table,jangorecki/data.table,Rdatatable/data.table,vlulla/data.table,vlulla/data.table