temp/gnome-shell-mobile: remove dep gnome-themes-standard (MR 3587)

Follow what Alpine is doing with gnome-shell.

Fix for upstream-compat check:
  missing depend(s): gnome-themes-standard

Related: https://gitlab.alpinelinux.org/alpine/aports/-/commit/b745f99744d915c51d97bf17d8a9a4a59502a923
Related: https://gitlab.alpinelinux.org/alpine/aports/-/commit/959ad322e0cb616257443206fd3ca85f7492012d

temp/gnome-shell-mobile/APKBUILD

@@ -2,7 +2,7 @@
 
 pkgname=gnome-shell-mobile
 pkgver=43.0
-pkgrel=3
+pkgrel=4
 pkgdesc="GNOME shell"
 url="https://wiki.gnome.org/Projects/GnomeShell"
 arch="all !armhf !s390x !riscv64" # gjs
@@ -23,7 +23,6 @@ depends="
 	font-adobe-source-code-pro
 	font-cantarell
 	adwaita-icon-theme
-	gnome-themes-standard
 	unzip
 	"
 makedepends="