Remove unnecessary String.join() call; no joining is performed since the 2nd parameter is a String (not an Iterable).

Author: kluever

codegen/src/main/resources/software/amazon/awssdk/codegen/rules/GetAttr.java.resource

@@ -122,7 +122,7 @@ public class GetAttr extends Fn {
                 .argv(
                         Arrays.asList(
                                 builder.target,
-                                Literal.fromStr(String.join(".", builder.path))))
+                                Literal.fromStr(builder.path)))
                 .build());
     }