remove useless change

Author: SylvainJuge

sdk-extensions/incubator/src/main/java/io/opentelemetry/sdk/extension/incubator/fileconfig/ComposableRuleBasedSamplerFactory.java

@@ -98,15 +98,10 @@ private static AttributeMatcher attributePatternsMatcher(
     if (attributePatternsModel == null) {
       return null;
     }
-    List<String> included = attributePatternsModel.getIncluded();
-    if (included != null && included.isEmpty()) {
-      // empty included should be treated as include everything by default.
-      included = null;
-    }
     return new AttributeMatcher(
         requireNonNull(attributePatternsModel.getKey(), "attribute_patterns key"),
         IncludeExcludePredicate.createPatternMatching(
-            included, attributePatternsModel.getExcluded()));
+            attributePatternsModel.getIncluded(), attributePatternsModel.getExcluded()));
   }
 
   // Visible for testing