Revert "メタデータのプロセッサーを作成"

This reverts commit c1b8722b82.

processor/src/main/java/one/nem/lacerta/processor/XmlMetaProcessor.java

@@ -1,4 +0,0 @@
-package one.nem.lacerta.processor;
-
-public interface XmlMetaProcessor {
-}

processor/src/main/java/one/nem/lacerta/processor/impl/XmlMetaProcessorImpl.java

@@ -1,4 +0,0 @@
-package one.nem.lacerta.processor.impl;
-
-public class XmlMetaProcessorImpl {
-}