Remove all -march= from configs

Remove all -march= from configs

These flags are limitting needlessly, are often patched by packagers,
and should be specified on the configuration command line by anyone
who desires for it to be specific rather than forced by us.

This work was already done with mingw when those configs were worked
on, now it gets applied to the remaining configs.

Reviewed-by: Andy Polyakov <appro@openssl.org>