main/postmarketos-base-ui: remove default-camera subpkg (MR 5644)

UI camera apps are in better shape, they will show a nice error to users if no camera device is found and increasingly more devices are getting working cameras now... so imho it doesn't make sense to have this subpackage anymore.

[ci:ignore-count]
[ci:skip-build]: already built successfully in CI

main/postmarketos-base-ui/APKBUILD

@@ -42,7 +42,6 @@ subpackages="
 	$pkgname-wifi-wpa_supplicant-openrc:wpa_supplicant_openrc
 	$pkgname-wifi-wpa_supplicant:wpa_supplicant
 	$pkgname-x11
-	postmarketos-default-camera:_default_camera
 	"
 replaces="
 	chrony
@@ -213,12 +212,6 @@ networkmanager() {
 	amove usr/lib/NetworkManager/dispatcher.d/50-dns-filter.sh
 }
 
-_default_camera() {
-	# dummy package for camera app, packages can install_if on this to install
-	# the appropriate camera app for that device/UI
-	mkdir "$subpkgdir"
-}
-
 qt_tweaks() {
 	amove etc/profile.d/qt-mobile-controls.sh
 }