Distribution.Simple: remove ranlibProgram; was workaround for old OS X ld issues

∙ At one point under OS X ld required that the mtime of the symbol table to
  be not older than that of the archive itself. This means that even copying
  an .a file required invoking ranlib to update the symbol table mtime.
∙ However running ranlib renders pointless the deterministic mode of #1537.
∙ As of at least 2008 according to the BUGS section of ranlib(1), this has
  no longer been necessary.

First introduction: 12b35902b78acc65b67dcef60724ec480bef81f3
Current implementation: af3da760d2161462a1b28be640cd0f2126e3eb7b