Auto merge of #2090 - JohnTitor:remove-rumprun-from-ci-stuff, r=JohnTitor

Remove CI support for `x86_64-rumprun-netbsd`

That target has been removed by rust-lang/rust#82594.
This is intended to unblock CI and we could drop the actual library support for it like CloudABI.

r? `@ghost`

Author: bors

ci/build.sh

@@ -125,7 +125,6 @@ armv7-unknown-linux-musleabihf \
 sparc64-unknown-linux-gnu \
 wasm32-unknown-emscripten \
 x86_64-linux-android \
-x86_64-rumprun-netbsd \
 "
 RUST_GT_1_19_LINUX_TARGETS="\
 aarch64-unknown-linux-musl \