community/pipewire: trim provides= from pipewire-alsa

this doesn't do anything except allow pulseaudio-alsa to be provided
by this (the priority doesn't work or do anything)

but that is pointless, i.e. there is no need for this to conflict with
pulseaudio-alsa or for something to "depend on pulseaudio-alsa" and
get this.

community/pipewire/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Bart Ribbers <bribbers@disroot.org>
 pkgname=pipewire
 pkgver=0.3.67
-pkgrel=0
+pkgrel=1
 pkgdesc="Multimedia processing graphs"
 url="https://pipewire.org/"
 arch="all"
@@ -118,8 +118,6 @@ package() {
 
 alsa() {
 	pkgdesc="ALSA support for pipewire"
-	provides="pulseaudio-alsa=$pkgver-r$pkgrel"
-	provider_priority=1
 	replaces="$pkgname"  # for backward compatibility
 
 	amove usr/lib/alsa-lib