qmp-events: move 'BLOCK_IO_ERROR' doc to schema

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

docs/qmp-events.txt

@@ -30,37 +30,6 @@ Example:
 
 Note: this event is rate-limited.
 
-BLOCK_IO_ERROR
---------------
-
-Emitted when a disk I/O error occurs.
-
-Data:
-
-- "device": device name. This is always present for compatibility
-            reasons, but it can be empty ("") if the image does not
-            have a device name associated. (json-string)
-- "node-name": node name. Note that errors may be reported for the root node
-               that is directly attached to a guest device rather than for the
-               node where the error occurred. (json-string)
-- "operation": I/O operation (json-string, "read" or "write")
-- "action": action that has been taken, it's one of the following (json-string):
-    "ignore": error has been ignored
-    "report": error has been reported to the device
-    "stop": the VM is going to stop because of the error
-
-Example:
-
-{ "event": "BLOCK_IO_ERROR",
-    "data": { "device": "ide0-hd1",
-              "node-name": "#block212",
-              "operation": "write",
-              "action": "stop" },
-    "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
-
-Note: If action is "stop", a STOP event will eventually follow the
-BLOCK_IO_ERROR event.
-
 BLOCK_JOB_CANCELLED
 -------------------