lxc: remove check for options we do not package

We do not package lxc-net or lxcfs so remove the lines within
lxc-checkconfig that looks forCONFIG_IP_NF_TARGET_MASQUERADE and
CONFIG_IP6_NF_TARGET_MASQUERADE which, as far as I know, is the only
part of lxc that needs them. Also remove the check for FUSE since we do
not pakcage lxcfs.

Without this commit, users will see these two as missing.

Signed-off-by: John Audia <therealgraysky@proton.me>

utils/lxc/patches/019-lxc-checkconfig-remove-options-for-lxc-net.patch

@@ -0,0 +1,19 @@
+--- a/src/lxc/cmd/lxc-checkconfig.in
++++ b/src/lxc/cmd/lxc-checkconfig.in
+@@ -250,16 +250,10 @@ if { [ "${KVER_MAJOR}" -gt 3 ] && [ "${K
+     printf "CONFIG_NF_NAT_IPV6: " && is_enabled CONFIG_NF_NAT_IPV6 && is_probed nf_nat_ipv6
+ fi
+ echo
+-printf "CONFIG_IP_NF_TARGET_MASQUERADE: " && is_enabled CONFIG_IP_NF_TARGET_MASQUERADE && is_probed nf_nat_masquerade_ipv4
+-echo
+-printf "CONFIG_IP6_NF_TARGET_MASQUERADE: " && is_enabled CONFIG_IP6_NF_TARGET_MASQUERADE && is_probed nf_nat_masquerade_ipv6
+-echo
+ printf "CONFIG_NETFILTER_XT_TARGET_CHECKSUM: " && is_enabled CONFIG_NETFILTER_XT_TARGET_CHECKSUM && is_probed xt_CHECKSUM
+ echo
+ printf "CONFIG_NETFILTER_XT_MATCH_COMMENT: " && is_enabled CONFIG_NETFILTER_XT_MATCH_COMMENT && is_probed xt_comment
+ echo
+-printf "FUSE (for use with lxcfs): " && is_enabled CONFIG_FUSE_FS && is_probed fuse
+-echo
+
+ echo "
+ --- Checkpoint/Restore ---"