Remove unnecessary exists() check.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@276871 13f79535-47bb-0310-9956-ffa450edef68

src/main/org/apache/tools/ant/taskdefs/Copy.java

@@ -467,7 +467,7 @@ public class Copy extends Task {
             throw new BuildException("One of tofile or todir must be set.");
         }
 
-        if (file != null && file.exists() && file.isDirectory()) {
+        if (file != null && file.isDirectory()) {
             throw new BuildException("Use a fileset to copy directories.");
         }