helvum: remove unused post_patch

srcpkgs/helvum/template

@@ -13,17 +13,6 @@ homepage="https://gitlab.freedesktop.org/pipewire/helvum"
 distfiles="https://gitlab.freedesktop.org/pipewire/helvum/-/archive/${version}/helvum-${version}.tar.gz"
 checksum=9f1ec78186dd9de5b3c5a4718c88eb2a4a4bf9de78d477cb4db0ea304567349c
 
-post_patch() {
-	cat <<-EOF >> "Cargo.toml"
-	[patch.crates-io]
-	pipewire = {git="https://gitlab.freedesktop.org/pipewire/pipewire-rs.git", rev="03301bc734c9f1d3fb7a064c072458ad00245133"}
-	libspa = {git="https://gitlab.freedesktop.org/pipewire/pipewire-rs.git", rev="03301bc734c9f1d3fb7a064c072458ad00245133"}
-	EOF
-	# Needed to get the above to register
-	cargo update --package pipewire@0.9.2
-	cargo update --package libspa@0.9.2
-}
-
 post_install() {
 	# Normally, meson would do this, but it's simpler to use the cargo build style and do this manually
 	# This also avoids the need for makedeps/build steps that are made unnecessary by xbps' hooks