Make message about dropped classpath elements verbose instead of a warning.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271560 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/types/Path.java

@@ -247,7 +247,7 @@ public class Path extends DataType implements Cloneable {
                 setLocation(f);
             } else {
                 log("dropping " + f + " from path as it doesn't exist", 
-                    Project.MSG_WARN);
+                    Project.MSG_VERBOSE);
             }
         }
     }