qapi: Inline and remove QERR_DEVICE_NO_HOTPLUG definition

Address the comment added in commit 4629ed1e98
("qerror: Finally unused, clean up"), from 2015:

  /*
   * These macros will go away, please don't use
   * in new code, and do not add new ones!
   */

Mechanical transformation using sed, and manual cleanup.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240312141343.3168265-5-armbru@redhat.com>
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index c68d0f7..00efaf1 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -29,7 +29,6 @@
 #include "qapi/error.h"
 #include "qapi/qapi-events-qdev.h"
 #include "qapi/qmp/qdict.h"
-#include "qapi/qmp/qerror.h"
 #include "qapi/visitor.h"
 #include "qemu/error-report.h"
 #include "qemu/option.h"
@@ -479,7 +478,8 @@
     static int unattached_count;
 
     if (dev->hotplugged && !dc->hotpluggable) {
-        error_setg(errp, QERR_DEVICE_NO_HOTPLUG, object_get_typename(obj));
+        error_setg(errp, "Device '%s' does not support hotplugging",
+                   object_get_typename(obj));
         return;
     }
 
diff --git a/include/qapi/qmp/qerror.h b/include/qapi/qmp/qerror.h
index daa8898..e932110 100644
--- a/include/qapi/qmp/qerror.h
+++ b/include/qapi/qmp/qerror.h
@@ -17,9 +17,6 @@
  * add new ones!
  */
 
-#define QERR_DEVICE_NO_HOTPLUG \
-    "Device '%s' does not support hotplugging"
-
 #define QERR_INVALID_PARAMETER \
     "Invalid parameter '%s'"
 
diff --git a/system/qdev-monitor.c b/system/qdev-monitor.c
index 2ae1460..6af6ef7 100644
--- a/system/qdev-monitor.c
+++ b/system/qdev-monitor.c
@@ -917,7 +917,7 @@
     }
 
     if (!dc->hotpluggable) {
-        error_setg(errp, QERR_DEVICE_NO_HOTPLUG,
+        error_setg(errp, "Device '%s' does not support hotplugging",
                    object_get_typename(OBJECT(dev)));
         return;
     }