Remove autoconf macro replacement of malloc, realloc and fork.
Remove autoconf macro replacement of malloc, realloc and fork.

Change-Id: I29bb91dfcfe0f8f152fd08b7b320fd6f15cc32d4
Signed-off-by: Christopher M. Cantalupo <christopher.m.cantalupo>

cmcantalupo/geopm,geopm/geopm,sssylvester/geopm,sssylvester/geopm,geopm/geopm,geopm/geopm,geopm/geopm,cmcantalupo/geopm,sssylvester/geopm,geopm/geopm,sssylvester/geopm,cmcantalupo/geopm,cmcantalupo/geopm,cmcantalupo/geopm