Revert "domain_conf: Introduce VIR_DOMAIN_DEF_PARSE_SKIP_POST_PARSE"

This breaks vCPU hotplug, because when starting a domain, we
create a copy of domain definition (which becomes live XML) and
during the post parse callbacks we might adjust some tunings so
that vCPU hotplug is possible.

This reverts commit c0f90799.

src/conf/domain_conf.c

@@ -4430,9 +4430,6 @@ virDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
 {
     int ret;
 
-    if (flags & VIR_DOMAIN_DEF_PARSE_SKIP_POST_PARSE)
-        return 0;
-
     if (xmlopt->config.devicesPostParseCallback) {
         ret = xmlopt->config.devicesPostParseCallback(dev, def, caps, flags,
                                                       xmlopt->config.priv,
@@ -4582,9 +4579,6 @@ virDomainDefPostParse(virDomainDefPtr def,
         .parseOpaque = parseOpaque,
     };
 
-    if (parseFlags & VIR_DOMAIN_DEF_PARSE_SKIP_POST_PARSE)
-        return 0;
-
     /* this must be done before the hypervisor-specific callback,
      * in case presence of a controller at a specific index is checked
      */

src/conf/domain_conf.h

@@ -2647,8 +2647,6 @@ typedef enum {
     VIR_DOMAIN_DEF_PARSE_ABI_UPDATE = 1 << 9,
     /* skip definition validation checks meant to be executed on define time only */
     VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE = 1 << 10,
-    /* skip post parse callback */
-    VIR_DOMAIN_DEF_PARSE_SKIP_POST_PARSE = 1 << 11,
 } virDomainDefParseFlags;
 
 typedef enum {