Remove SQLConf.ADAPTIVE_EXECUTION_ENABLED.key -> "false".

Author: sarutak

sql/core/src/test/scala/org/apache/spark/sql/ExplainSuite.scala

@@ -229,22 +229,19 @@ class ExplainSuite extends ExplainSuiteHelper with DisableAdaptiveExecutionSuite
   }
 
   test("SPARK-33853: explain codegen - check presence of subquery") {
-    withTable("df1", "df2") {
-      withSQLConf(SQLConf.WHOLESTAGE_CODEGEN_ENABLED.key -> "true",
-        SQLConf.ADAPTIVE_EXECUTION_ENABLED.key -> "false") {
-        withTable("df1") {
-          spark.range(1, 100)
-            .write
-            .format("parquet")
-            .mode("overwrite")
-            .saveAsTable("df1")
-
-          val sqlText = "EXPLAIN CODEGEN SELECT (SELECT min(id) FROM df1)"
-          val expectedText = "Found 3 WholeStageCodegen subtrees."
-
-          withNormalizedExplain(sqlText) { normalizedOutput =>
-            assert(normalizedOutput.contains(expectedText))
-          }
+    withSQLConf(SQLConf.WHOLESTAGE_CODEGEN_ENABLED.key -> "true") {
+      withTable("df1") {
+        spark.range(1, 100)
+          .write
+          .format("parquet")
+          .mode("overwrite")
+          .saveAsTable("df1")
+
+        val sqlText = "EXPLAIN CODEGEN SELECT (SELECT min(id) FROM df1)"
+        val expectedText = "Found 3 WholeStageCodegen subtrees."
+
+        withNormalizedExplain(sqlText) { normalizedOutput =>
+          assert(normalizedOutput.contains(expectedText))
         }
       }
     }