Disable snap support for RHEL

We don't have snapd-glib in RHEL.

gnome-software.spec

@@ -43,7 +43,9 @@ BuildRequires: rpm-ostree-devel
 BuildRequires: libgudev1-devel
 BuildRequires: valgrind-devel
 BuildRequires: liboauth-devel
+%if 0%{?fedora}
 BuildRequires: snapd-glib-devel
+%endif
 
 Requires: appstream-data
 %if 0%{?fedora}
@@ -88,6 +90,7 @@ Requires: %{name}%{?_isa} = %{version}-%{release}
 %description editor
 Editor for designing banners for GNOME Software.
 
+%if 0%{?fedora}
 %package snap
 Summary: Support for Ubuntu Snap packages
 Requires: %{name}%{?_isa} = %{version}-%{release}
@@ -95,13 +98,18 @@ Supplements: (gnome-software%{?_isa} and snapd%{?_isa})
 
 %description snap
 Adds support for Snap packages from the Snap store.
+%endif
 
 %prep
 %autosetup -p1
 
 %build
 %meson \
+%if 0%{?fedora}
     -Denable-snap=true \
+%else
+    -Denable-snap=false \
+%endif
     -Denable-gudev=true \
     -Denable-packagekit=true \
     -Denable-external-appstream=false \
@@ -195,9 +203,11 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/*.desktop
 %{_libexecdir}/gnome-software-cmd
 %{_libexecdir}/gnome-software-restarter
 
+%if 0%{?fedora}
 %files snap
 %{_libdir}/gs-plugins-%{gs_plugin_version}/libgs_plugin_snap.so
 %{_datadir}/metainfo/org.gnome.Software.Plugin.Snap.metainfo.xml
+%endif
 
 %files devel
 %{_libdir}/pkgconfig/gnome-software.pc