qemu: monitor: Remove unsupported function check for 'block_resize'

QEMU supports 'block_resize' since 0.14 so we don't need to do explicit
checking. Additionally the caller did not use the different value at
all.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/qemu/qemu_monitor_json.c

@@ -2550,8 +2550,6 @@ qemuMonitorJSONBlockStatsUpdateCapacity(qemuMonitorPtr mon,
 }
 
 
-/* Return 0 on success, -1 on failure, or -2 if not supported.  Size
- * is in bytes.  */
 int qemuMonitorJSONBlockResize(qemuMonitorPtr mon,
                                const char *device,
                                unsigned long long size)
@@ -2570,11 +2568,6 @@ int qemuMonitorJSONBlockResize(qemuMonitorPtr mon,
     if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0)
         goto cleanup;
 
-    if (qemuMonitorJSONHasError(reply, "CommandNotFound")) {
-        ret = -2;
-        goto cleanup;
-    }
-
     if (qemuMonitorJSONCheckError(cmd, reply) < 0)
         goto cleanup;