• Remove broken code from configure, fixing build on 9.x

This code is related to gcc 3 and is now useless; as a side effect, it sets LD to CC while it should be CXX, breaking the build:

ModbusComm.cpp:(.text+0x5f4): undefined reference to `operator new[](unsigned int)'

Submitted by: pkg-fallout
Approved by: portmgr blanket