This disables the f64 minimum/maximum tests for the
arm-unknown-linux-gnueabihf job. The next release will be supporting
cross-compiled doctests, and these tests fail on that platform.
It looks like this was just fixed via
https://github.com/llvm/llvm-project/pull/142170, but I assume that will
not trickle down to our copy of llvm in the next couple of weeks.
Assuming that does get fixed when llvm is updated, then these can be
removed.
cc https://github.com/rust-lang/rust/issues/141087
b0041b8a05