rhel10: drop ifcfg-eth0 sysconfig network-scripts file

The AMI for rhel9 and below writes a `ifcfg-eth0` sysconfig file
that enables dhcp and disables ipv6. This commit drops this
file because:
1. ipcfg-rh is deprecated
2. NetworkManager defaults to dhcp by default for wired ethernet
   (unless configured otherwise)
3. It seems we do not need to disable ipv6 in 2024 anymore

With the exception of (3) I'm pretty confident in this commit.
Feedback welcome.

pkg/distro/rhel/rhel10/ami.go

@@ -58,19 +58,6 @@ func baseEc2ImageConfig() *distro.ImageConfig {
 					Networking: true,
 					NoZeroConf: true,
 				},
-				NetworkScripts: &osbuild.NetworkScriptsOptions{
-					IfcfgFiles: map[string]osbuild.IfcfgFile{
-						"eth0": {
-							Device:    "eth0",
-							Bootproto: osbuild.IfcfgBootprotoDHCP,
-							OnBoot:    common.ToPtr(true),
-							Type:      osbuild.IfcfgTypeEthernet,
-							UserCtl:   common.ToPtr(true),
-							PeerDNS:   common.ToPtr(true),
-							IPv6Init:  common.ToPtr(false),
-						},
-					},
-				},
 			},
 		},
 		SystemdLogind: []*osbuild.SystemdLogindStageOptions{