c-toolchain: remove stray conditional read macro
c-toolchain: remove stray conditional read macro

mcna/cffi,cffi/cffi,stassats/cffi,stassats/cffi,3b/cffi,dkochmanski/cffi,cffi/cffi,3b/cffi,cffi/cffi,mcna/cffi,stassats/cffi,dkochmanski/cffi,dkochmanski/cffi,attila-lendvai/cffi,3b/cffi,attila-lendvai/cffi