[ELF] Remove dead code related to relocation scanning (#195594)

  RelExpr expr =

      ctx.target->getRelExpr(type, sym, sec->content().data() + offset);

  // Ignore R_*_NONE and other marker relocations.

  if (expr == R_NONE)

    return;

  // Error if the target symbol is undefined. Symbol index 0 may be used by

  // marker relocations, e.g. R_*_NONE and R_ARM_V4BX. Don't error on them.

  if (sym.isUndefined() && symIdx != 0 &&

      maybeReportUndefined(cast<Undefined>(sym), offset))

    return;

  // Ensure GOT or GOTPLT is created for relocations that reference their base

  // addresses without directly creating entries.

  if (oneof<R_GOTPLTREL, R_GOTPLT, R_TLSGD_GOTPLT>(expr)) {

    ctx.in.gotPlt->hasGotPltOffRel.store(true, std::memory_order_relaxed);

  } else if (oneof<R_GOTONLY_PC, R_GOTREL, RE_PPC32_PLTREL>(expr)) {

    ctx.in.got->hasGotOffRel.store(true, std::memory_order_relaxed);

  }

  process(expr, type, offset, sym, addend);

}