Removed inteldfp platform macros from opts file.
Removed inteldfp platform macros from opts file.

The IntelDFP library's configuration is done by the wrapper files,
not the 'opts' file -- platform constants belong in that file.
This change should fix building issues on IBM platforms, due to
multiple macro definition conflicts.

apaprocki/bde,dbremner/bde,frutiger/bde,bloomberg/bde-allocator-benchmarks,gbleaney/Allocator-Benchmarks,dbremner/bde,bloomberg/bde-allocator-benchmarks,idispatch/bde,abeels/bde,gbleaney/Allocator-Benchmarks,jmptrader/bde,apaprocki/bde,bloomberg/bde-allocator-benchmarks,osubboo/bde,che2/bde,jmptrader/bde,mversche/bde,minhlongdo/bde,bowlofstew/bde,minhlongdo/bde,frutiger/bde,osubboo/bde,RMGiroux/bde-allocator-benchmarks,dbremner/bde,dharesign/bde,mversche/bde,RMGiroux/bde-allocator-benchmarks,idispatch/bde,dbremner/bde,saxena84/bde,abeels/bde,apaprocki/bde,minhlongdo/bde,idispatch/bde,bowlofstew/bde,bloomberg/bde-allocator-benchmarks,RMGiroux/bde-allocator-benchmarks,osubboo/bde,bloomberg/bde-allocator-benchmarks,bloomberg/bde,abeels/bde,RMGiroux/bde-allocator-benchmarks,abeels/bde,bloomberg/bde,gbleaney/Allocator-Benchmarks,frutiger/bde,bloomberg/bde,saxena84/bde,bowlofstew/bde,osubboo/bde,RMGiroux/bde-allocator-benchmarks,bloomberg/bde,gbleaney/Allocator-Benchmarks,idispatch/bde,che2/bde,jmptrader/bde,saxena84/bde,abeels/bde,mversche/bde,che2/bde,apaprocki/bde,abeels/bde,dharesign/bde,frutiger/bde,apaprocki/bde,che2/bde,bloomberg/bde,minhlongdo/bde,dharesign/bde,jmptrader/bde,mversche/bde,dharesign/bde,bowlofstew/bde,saxena84/bde