Remove outdated and now unneeded workaround

[mowies]

The (recently moved) linux package tests have a pretty old workaround that should not be needed anymore.

opentelemetry-collector-releases/scripts/package-tests/package-tests.sh

Lines 46 to 58 in 5342205

	# test install
	CRUN_VER='1.14.4'
	mkdir -p "${HOME}/.local/bin"
	curl -L "https://github.com/containers/crun/releases/download/${CRUN_VER}/crun-${CRUN_VER}-linux-amd64" -o "${HOME}/.local/bin/crun"
	chmod +x "${HOME}/.local/bin/crun"
	mkdir -p "${HOME}/.config/containers"
	cat << EOF > "${HOME}/.config/containers/containers.conf"
	[engine.runtimes]
	crun = [
	"${HOME}/.local/bin/crun",
	"/usr/bin/crun"
	]
	EOF

I think the workaround can be removed. It was originally introduced here.

[mowies]

pinging @atoulme since he added the original workaround in open-telemetry/opentelemetry-collector-contrib#31527 :)