Eliminate DPMM define here since now it's done in plplotP.h.
Eliminate DPMM define here since now it's done in plplotP.h.

svn path=/trunk/; revision=3942

FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot,FreeScienceCommunity/PLPlot