package/dbus-triggerd: remove package

Analysis of https://rg42.org/gitweb/?p=dbustriggerd.git:
last commit: 2014

Musl libc 1.2.5 removed the definition of the basename() function from
string.h and only provides it in libgen.h as the POSIX standard
defines it.

Instead of fixing an unmaintainted package we remove it from buildroot,
no other package depends on it.

Fixes:
https://autobuild.buildroot.net/results/811/81170fe89e1f5b70c63657684de43175e621f762/

dbus-triggerd.c:150:27: error: implicit declaration of function 'basename' [-Wimplicit-function-declaration]
  150 |     argv[argc++] = strdup(basename(handler_cmd));

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

Config.in.legacy

@@ -146,6 +146,13 @@ endif
 
 comment "Legacy options removed in 2026.02"
 
+config BR2_PACKAGE_DBUS_TRIGGERD
+	bool "dbus-triggerd removed"
+	select BR2_LEGACY
+	help
+	  dbus-triggerd was no longer maintained upstream, so it has
+	  been dropped.
+
 config BR2_PACKAGE_CVS
 	bool "cvs has been removed"
 	select BR2_LEGACY