Simplified code, project properties already contain user props and sys props
diff --git a/src/main/java/org/eclipse/aether/ant/AntRepoSys.java b/src/main/java/org/eclipse/aether/ant/AntRepoSys.java
index 83bfedb..8c34197 100644
--- a/src/main/java/org/eclipse/aether/ant/AntRepoSys.java
+++ b/src/main/java/org/eclipse/aether/ant/AntRepoSys.java
@@ -206,9 +206,7 @@
 
         Map<Object, Object> configProps = new LinkedHashMap<Object, Object>();
         configProps.put( ConfigurationProperties.USER_AGENT, getUserAgent() );
-        configProps.putAll( System.getProperties() );
         configProps.putAll( (Map<?, ?>) project.getProperties() );
-        configProps.putAll( (Map<?, ?>) project.getUserProperties() );
         processServerConfiguration( configProps );
         session.setConfigProperties( configProps );