Drop unneeded RENAME of the installed CMakeLists.txt file.
Drop unneeded RENAME of the installed CMakeLists.txt file.

svn path=/trunk/; revision=10211

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