Rip out --build-id=none hack

Currently the driver's object-merging logic passes --build-id=none to the linker for largely unknown reasons:

      -- suppress the generation of the .note.gnu.build-id section,
      -- which we don't need and sometimes causes ld to emit a
      -- warning:
      ld_build_id | toolSettings_ldSupportsBuildId toolSettings' = ["--build-id=none"]
                  | otherwise                                    = []

This has caused trouble for packagers and the motivation for this is quite unclear. I suggest that we drop it.

The hack was apparently introduced in 2011: a52ff761.