Remove fips-module related diff

This particular change didn't come from upstream. It was added locally
in 7a991ecd1 when attempting to enable the fips provider with 3.0.

Given the fact that we no longer build the fips provider and the fips
provider build process (including sources) is very prescribed to
specific build steps and source versions, there's no reason why we need
to continue carrying around this diff anymore.

MFC after: 1 week
Signed-off-by: Enji Cooper <ngie@FreeBSD.org>