Hide the image and sanity-checks crate features

They can be restored when rust-image is at least 0.25.1, RHBZ#2268816

oxipng-fix-metadata-auto.diff

@@ -1,5 +1,5 @@
 --- oxipng-9.1.1/Cargo.toml	1970-01-01T00:00:01+00:00
-+++ oxipng-9.1.1/Cargo.toml	2024-04-24T19:26:06.475276+00:00
++++ oxipng-9.1.1/Cargo.toml	2024-04-26T21:18:32.492352+00:00
 @@ -150,7 +150,6 @@
  [features]
  binary = [

rust-oxipng.spec

@@ -149,18 +149,6 @@ use the "freestanding" feature of the "%{crate}" crate.
 %files       -n %{name}+freestanding-devel
 %ghost %{crate_instdir}/Cargo.toml
 
-%package     -n %{name}+image-devel
-Summary:        %{summary}
-BuildArch:      noarch
-
-%description -n %{name}+image-devel %{_description}
-
-This package contains library source intended for building other packages which
-use the "image" feature of the "%{crate}" crate.
-
-%files       -n %{name}+image-devel
-%ghost %{crate_instdir}/Cargo.toml
-
 %package     -n %{name}+parallel-devel
 Summary:        %{summary}
 BuildArch:      noarch
@@ -185,18 +173,6 @@ use the "rayon" feature of the "%{crate}" crate.
 %files       -n %{name}+rayon-devel
 %ghost %{crate_instdir}/Cargo.toml
 
-%package     -n %{name}+sanity-checks-devel
-Summary:        %{summary}
-BuildArch:      noarch
-
-%description -n %{name}+sanity-checks-devel %{_description}
-
-This package contains library source intended for building other packages which
-use the "sanity-checks" feature of the "%{crate}" crate.
-
-%files       -n %{name}+sanity-checks-devel
-%ghost %{crate_instdir}/Cargo.toml
-
 %package     -n %{name}+zopfli-devel
 Summary:        %{summary}
 BuildArch:      noarch

rust2rpm.toml

@@ -9,3 +9,12 @@ post = [
   "mandest='%{buildroot}%{_mandir}/man1'",
   "install -t \"${mandest}\" -D -p -m 0644 \"${mansrc}\"",
 ]
+
+[features]
+hide = [
+  # Waiting for rust-image 0.25.1:
+  # https://bugzilla.redhat.com/show_bug.cgi?id=2268816
+  "image",
+  # Needs the image feature:
+  "sanity-checks",
+]