Revert "for efficiency, run this method asynchronously"

This reverts commit 836e52e6.

@Asynchronous does deliver method calls in order, but the receiver
might end up executing multiple calls in parallel, so it doesn't really
guarantee the in-order execution.

That makes @Asynchronous somewhat useless, so I need to fix that in
remoting. But until I do so, it's safer to back out this change.

maven-plugin/src/main/java/hudson/maven/MavenBuildProxy.java

@@ -25,7 +25,6 @@ package hudson.maven;
 
 import hudson.FilePath;
 import hudson.model.Result;
-import hudson.remoting.Asynchronous;
 import hudson.remoting.Callable;
 import hudson.remoting.DelegatingCallable;
 
@@ -106,7 +105,6 @@ public interface MavenBuildProxy {
      * @see ArtifactManager#archive
      * @since 1.531
      */
-    @Asynchronous
     void queueArchiving(String artifactPath, String artifact);
 
     /**