[FLINK-36336][docs] Remove deprecated DataSet API related contents in documentations

Author: codenohup

docs/content.zh/docs/concepts/overview.md

@@ -35,7 +35,7 @@ under the License.
 
 Flink 为流式/批式处理应用程序的开发提供了不同级别的抽象。
 
-{{< img src="/fig/levels_of_abstraction.svg" alt="Programming levels of abstraction" class="offset" width="80%" >}}
+{{< img src="/fig/concepts/levels_of_abstraction.svg" alt="Programming levels of abstraction" class="offset" width="80%" >}}
 
   - Flink API 最底层的抽象为**有状态实时流处理**。其抽象实现是 [Process Function]({{< ref "docs/dev/datastream/operators/process_function" >}})，并且 **Process Function** 被 Flink 框架集成到了 [DataStream API]({{< ref "docs/dev/datastream/overview" >}}) 中来为我们使用。它允许用户在应用程序中自由地处理来自单流或多流的事件（数据），并提供具有全局一致性和容错保障的*状态*。此外，用户可以在此层抽象中注册事件时间（event time）和处理时间（processing time）回调方法，从而允许程序可以实现复杂计算。
 

docs/content.zh/docs/deployment/config.md

@@ -617,15 +617,15 @@ You can configure environment variables to be set on the JobManager and TaskMana
 These options relate to parts of Flink that are not actively developed any more.
 These options may be removed in a future release.
 
-**DataSet API Optimizer**
+**Optimizer**
 
 {{< generated/optimizer_configuration >}}
 
-**DataSet API Runtime Algorithms**
+**Runtime Algorithms**
 
 {{< generated/algorithm_configuration >}}
 
-**DataSet File Sinks**
+**File Sinks**
 
 {{< generated/deprecated_file_sinks_section >}}
 

docs/content.zh/docs/deployment/speculative_execution.md

@@ -40,10 +40,6 @@ under the License.
 ## 使用方法
 本章节描述了如何使用预测执行，包含如何启用，调优，以及开发/改进自定义 source 来支持预测执行。
 
-{{< hint warning >}}
-注意：Flink 不支持 DataSet 作业的预测执行，因为 DataSet API 在不久的将来会被废弃。现在推荐使用 DataStream API 来开发 Flink 批处理作业。
-{{< /hint >}}
-
 ### 启用预测执行
 你可以通过以下配置项启用预测执行：
 - `execution.batch.speculative.enabled: true`

docs/content/docs/concepts/overview.md

@@ -39,7 +39,7 @@ This _Concepts in Depth_ section provides a deeper understanding of how Flink's
 
 Flink offers different levels of abstraction for developing streaming/batch applications.
 
-{{< img src="/fig/levels_of_abstraction.png" alt="Programming levels of abstraction" width="70%" >}}
+{{< img src="/fig/concepts/levels_of_abstraction.svg" alt="Programming levels of abstraction" width="70%" >}}
 
   - The lowest level abstraction simply offers **stateful and timely stream processing**. It is
     embedded into the [DataStream API]({{< ref "docs/dev/datastream/overview" >}}) via the [Process

docs/content/docs/deployment/config.md

@@ -619,15 +619,15 @@ You can configure environment variables to be set on the JobManager and TaskMana
 These options relate to parts of Flink that are not actively developed any more.
 These options may be removed in a future release.
 
-**DataSet API Optimizer**
+**Optimizer**
 
 {{< generated/optimizer_configuration >}}
 
-**DataSet API Runtime Algorithms**
+**Runtime Algorithms**
 
 {{< generated/algorithm_configuration >}}
 
-**DataSet File Sinks**
+**File Sinks**
 
 {{< generated/deprecated_file_sinks_section >}}