Remove unnecessary `as_ref()` #107

Job	Run time
windows (windows-latest, x64, x64)	3m 2s
sdist	12s
windows (windows-11-arm, aarch64, arm64)	2m 4s
windows (windows-latest, x86, x86)	2m 28s
macos (macos-latest, aarch64)	42s
macos (macos-15-intel, x86_64)	1m 26s
musllinux (ubuntu-22.04, armv7)	1m 22s
musllinux (ubuntu-22.04, x86)	1m 30s
musllinux (ubuntu-22.04, aarch64)	1m 31s
musllinux (ubuntu-22.04, x86_64)	1m 38s
linux (ubuntu-22.04, aarch64)	1m 40s
linux (ubuntu-22.04, s390x)	1m 47s
linux (ubuntu-22.04, x86_64)	1m 34s
linux (ubuntu-22.04, armv7)	1m 58s
linux (ubuntu-22.04, ppc64le)	1m 54s
linux (ubuntu-22.04, x86)	2m 1s
Release	0s
	26m 49s

Provide feedback