Delete the unsafe DeleteEppResourceCommand

It was somewhat unsafe to run because it bypassed some of the checks
that are usually run when attempting to delete EPP resources. The
DeleteDomainCommand is a recommended replacement that uses SOY templates
to delete a domain using EPP. Similar commands to delete hosts and
contacts can be written if required.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=147634146

java/google/registry/tools/RegistryTool.java

@@ -51,7 +51,6 @@ public final class RegistryTool {
           .put("delete_credit", DeleteCreditCommand.class)
           .put("delete_domain", DeleteDomainCommand.class)
           .put("delete_entity", DeleteEntityCommand.class)
-          .put("delete_epp_resource", DeleteEppResourceCommand.class)
           .put("delete_premium_list", DeletePremiumListCommand.class)
           .put("delete_reserved_list", DeleteReservedListCommand.class)
           .put("domain_application_info", DomainApplicationInfoCommand.class)