Unbundle serde_with and its dependencies

https://bugzilla.redhat.com/show_bug.cgi?id=2033857 was fixed, so we
can undo the bundling.

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=2033859.

bundle-serde_with.patch

@@ -1,11 +0,0 @@
---- coreos-installer-0.12.0/Cargo.toml.old	2021-12-17 15:04:38.560516015 -0500
-+++ coreos-installer-0.12.0/Cargo.toml	2021-12-17 16:45:29.567815138 -0500
-@@ -120,7 +120,7 @@
- version = "^1.0"
- 
- [dependencies.serde_with]
--version = "1.9.4"
-+path = "vendor/serde_with"
- 
- [dependencies.serde_yaml]
- version = "0.8"

rust-coreos-installer.spec

@@ -12,7 +12,7 @@
 
 Name:           rust-%{crate}
 Version:        0.12.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        Installer for Fedora CoreOS and RHEL CoreOS
 
 # Upstream license specification: Apache-2.0
@@ -26,16 +26,6 @@ Source2:        https://github.com/coreos/coreos-installer-dracut/archive/%{drac
 # LTO causes OOM on Fedora armv7hl builders with Rust 1.57.0
 Patch1:         disable-lto.patch
 
-# rust-serde_with doesn't include the default "macros" feature.  Bundle
-# serde_with and its dependencies while we sort out this mess.
-Patch2:         bundle-serde_with.patch
-BuildRequires:  rust-ident_case+default-devel
-Provides:       bundled(crate(darling)) = 0.13.0
-Provides:       bundled(crate(darling_core)) = 0.13.0
-Provides:       bundled(crate(darling_macro)) = 0.13.0
-Provides:       bundled(crate(serde_with)) = 1.11.0
-Provides:       bundled(crate(serde_with_macros)) = 1.5.1
-
 ExclusiveArch:  %{rust_arches}
 %if 0%{?rhel} && !0%{?eln}
 BuildRequires:  rust-toolset
@@ -109,18 +99,6 @@ directory = "vendor"
 EOF
 %else
 %cargo_prep
-# FIXME: until the serde_with package provides the macros feature
-tar xvf %{SOURCE1}
-mkdir -p .cargo
-cat >>.cargo/config << EOF
-[patch.crates-io]
-darling = { path = 'vendor/darling' }
-darling_core = { path = 'vendor/darling_core' }
-darling_macro = { path = 'vendor/darling_macro' }
-serde_with = { path = 'vendor/serde_with' }
-serde_with_macros = { path = 'vendor/serde_with_macros' }
-EOF
-# /FIXME
 %endif
 # Fix SIGSEGV in tests on s390x
 # https://bugzilla.redhat.com/show_bug.cgi?id=1883457
@@ -215,6 +193,9 @@ from the initramfs.
 %endif
 
 %changelog
+* Mon Dec 20 2021 Benjamin Gilbert <bgilbert@redhat.com> - 0.12.0-2
+- Unbundle serde_with and its dependencies
+
 * Fri Dec 17 2021 Benjamin Gilbert <bgilbert@redhat.com> - 0.12.0-1
 - New release
 - Temporarily bundle serde_with and its dependencies