Remove GCCE-specific def file for libstdcpp.dll - it's not binary compatible with the EABI one anyway (Bug 2971)
using _STLP_NEW_IO_NAMESPACE::setiosflags;
using _STLP_NEW_IO_NAMESPACE::resetiosflags;
using _STLP_NEW_IO_NAMESPACE::setbase;
using _STLP_NEW_IO_NAMESPACE::setfill;
using _STLP_NEW_IO_NAMESPACE::setprecision;
using _STLP_NEW_IO_NAMESPACE::setw;