Revert "networkd: NetLabel integration"

This reverts PR #23269 and its follow-up commit. Especially,
2299b1cae32c1fb8911da0ce26efced68032f4f8 (partially), and
3cf63830acdef9d8afdc9ef1cf25aa7e85a5e4d5.

The PR was merged without final approval, and has several issues:
- The NetLabel for static addresses are not assigned, as labels are
  stored in the Address objects managed by Network, instead of Link.
- If NetLabel is specified for a static address, then the address
  section will be invalid and the address will not be configured,
- It should be implemented with Request object,
- There is no test about the feature.

1 files changed, 0 insertions, 4 deletions

diff --git a/src/network/networkd-address.h b/src/network/networkd-address.h
index e5770155fa..0237c1cb98 100644
--- a/src/network/networkd-address.h
+++ b/src/network/networkd-address.h
@@ -61,9 +61,6 @@ struct Address {
 
         /* Called when address become ready */
         address_ready_callback_t callback;
-
-        /* NetLabel */
-        Set *netlabels;
 };
 
 const char* format_lifetime(char *buf, size_t l, usec_t lifetime_usec) _warn_unused_result_;
@@ -138,4 +135,3 @@ CONFIG_PARSER_PROTOTYPE(config_parse_address_flags);
 CONFIG_PARSER_PROTOTYPE(config_parse_address_scope);
 CONFIG_PARSER_PROTOTYPE(config_parse_address_route_metric);
 CONFIG_PARSER_PROTOTYPE(config_parse_duplicate_address_detection);
-CONFIG_PARSER_PROTOTYPE(config_parse_address_netlabel);