monitor: remove 'query-events' QMP command

The code comment suggests removing QAPIEvent_(str|lookup) symbols too,
however, these are both auto-generated as standard for any enum in
QAPI. As such it they'll exist whether we use them or not.

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

qapi/control.json

@@ -159,51 +159,6 @@
 { 'command': 'query-commands', 'returns': ['CommandInfo'],
   'allow-preconfig': true }
 
-##
-# @EventInfo:
-#
-# Information about a QMP event
-#
-# @name: The event name
-#
-# Since: 1.2
-##
-{ 'struct': 'EventInfo', 'data': {'name': 'str'} }
-
-##
-# @query-events:
-#
-# Return information on QMP events.
-#
-# Features:
-# @deprecated: This command is deprecated, because its output doesn't
-#              reflect compile-time configuration.  Use 'query-qmp-schema'
-#              instead.
-#
-# Returns: A list of @EventInfo.
-#
-# Since: 1.2
-#
-# Example:
-#
-# -> { "execute": "query-events" }
-# <- {
-#      "return": [
-#          {
-#             "name":"SHUTDOWN"
-#          },
-#          {
-#             "name":"RESET"
-#          }
-#       ]
-#    }
-#
-# Note: This example has been shortened as the real response is too long.
-#
-##
-{ 'command': 'query-events', 'returns': ['EventInfo'],
-  'features': [ 'deprecated' ] }
-
 ##
 # @quit:
 #