VMDK: Remove debug message

Hi,

vmdk block backend contains a debug message printed to stderr each time it opens a disk.
Attached patch removes it.

Hervé

Index: block-vmdk.c
===================================================================

block-vmdk.c +0 -1

@@ -376,7 +376,6 @@
     if (parent_open)
         // Parent must be opened as RO.
         flags = BDRV_O_RDONLY;
-    fprintf(stderr, "(VMDK) image open: flags=0x%x filename=%s\n", flags, bs->filename);
 
     ret = bdrv_file_open(&s->hd, filename, flags);
     if (ret < 0)