storage: fix private templates are not copied to new image store (apache#9206)

```
2024-06-10T12:24:50,711 INFO  [o.a.c.s.i.TemplateServiceImpl] (qtp776484396-20:[ctx-eb090c22, ctx-5fa5579c]) (logid:7a783000) Template Sync did not find 211-2-d536fb03-5f89-3e77-8dea-323315bcbfab on image store 3, may request download based on available hypervisor types
...
2024-06-10T12:24:51,043 INFO  [o.a.c.s.i.TemplateServiceImpl] (qtp776484396-20:[ctx-eb090c22, ctx-5fa5579c]) (logid:7a783000) Skip sync downloading private template 211-2-d536fb03-5f89-3e77-8dea-323315bcbfab to a new image store

```

Author: weizhouapache

engine/storage/image/src/main/java/org/apache/cloudstack/storage/image/TemplateServiceImpl.java

@@ -533,11 +533,6 @@ public void handleTemplateSync(DataStore store) {
                                 logger.info("Skip downloading template " + tmplt.getUniqueName() + " since no url is specified.");
                                 continue;
                             }
-                            // if this is private template, skip sync to a new image store
-                            if (isSkipTemplateStoreDownload(tmplt, zoneId)) {
-                                logger.info("Skip sync downloading private template " + tmplt.getUniqueName() + " to a new image store");
-                                continue;
-                            }
 
                             // if this is a region store, and there is already an DOWNLOADED entry there without install_path information, which
                             // means that this is a duplicate entry from migration of previous NFS to staging.