remove unnecessary code

packages/app/src/client/util/interceptor/detach-code-blocks.js

@@ -47,7 +47,6 @@ export class DetachCodeBlockInterceptor extends BasicInterceptor {
 
     const context = Object.assign(args[0]); // clone
     const targetKey = this.getTargetKey(contextName);
-    const currentPagePath = context.currentPagePath; // eslint-disable-line no-unused-vars
 
     context.dcbContextMap = {};