Revert "Update transform catalogue docs (#38457)"

This reverts commit 0c9b272.

Author: aIbrahiim

examples/java/src/main/java/org/apache/beam/examples/BatchElementsExample.java

@@ -17,8 +17,6 @@
  */
 package org.apache.beam.sdk.transforms;
 
-import static java.util.Collections.singleton;
-
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Comparator;
@@ -29,7 +27,6 @@
 import javax.annotation.Nullable;
 import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
 import org.apache.beam.sdk.transforms.windowing.GlobalWindow;
-import org.apache.beam.sdk.transforms.windowing.PaneInfo;
 import org.apache.beam.sdk.values.PCollection;
 import org.apache.beam.sdk.values.WindowingStrategy;
 
@@ -571,11 +568,7 @@ public void processElement(
 
         try (BatchSizeEstimator.Stopwatch sw = estimator.recordTime(targetBatch.size)) {
 
-          receiver.outputWindowedValue(
-              targetBatch.elements,
-              targetWindow.maxTimestamp(),
-              singleton(targetWindow),
-              PaneInfo.NO_FIRING);
+          receiver.outputWithTimestamp(targetBatch.elements, targetWindow.maxTimestamp());
         }
 
         batches.remove(targetWindow);

sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/BatchElements.java

@@ -55,7 +55,6 @@ limitations under the License.
   <tr><td><a href="/documentation/transforms/java/aggregation/groupbykey">GroupByKey</a></td><td>Takes a keyed collection of elements and produces a collection where each element
   consists of a key and all values associated with that key.</td></tr>
   <tr><td><a href="/documentation/transforms/java/aggregation/groupintobatches">GroupIntoBatches</a></td><td>Batches values associated with keys into <code>Iterable</code> batches of some size. Each batch contains elements associated with a specific key.</td></tr>
-  <tr><td><a href="/documentation/transforms/java/aggregation/batchelements">BatchElements</a></td><td>Groups individual elements into batches to amortize fixed processing costs, using dynamically estimated batch sizes.</td></tr>
   <tr><td><a href="/documentation/transforms/java/aggregation/hllcount">HllCount</a></td><td>Estimates the number of distinct elements and creates re-aggregatable sketches using the HyperLogLog++ algorithm.</td></tr>
   <tr><td><a href="/documentation/transforms/java/aggregation/latest">Latest</a></td><td>Selects the latest element within each aggregation according to the implicit timestamp.</td></tr>
   <tr><td><a href="/documentation/transforms/java/aggregation/max">Max</a></td><td>Outputs the maximum element within each aggregation.</td></tr>

website/www/site/content/en/documentation/transforms/java/aggregation/batchelements.md

@@ -404,7 +404,6 @@
             <li><a href="/documentation/transforms/java/aggregation/distinct/">Distinct</a></li>
             <li><a href="/documentation/transforms/java/aggregation/groupbykey/">GroupByKey</a></li>
             <li><a href="/documentation/transforms/java/aggregation/groupintobatches/">GroupIntoBatches</a></li>
-              <li><a href="/documentation/transforms/java/aggregation/batchelements/">BatchElements</a></li>
             <li><a href="/documentation/transforms/java/aggregation/hllcount/">HllCount</a></li>
             <li><a href="/documentation/transforms/java/aggregation/latest/">Latest</a></li>
             <li><a href="/documentation/transforms/java/aggregation/max/">Max</a></li>