Revert "[SPARK-20392][SQL] Set barrier to prevent re-entering a tree"

...ala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala

...apache/spark/sql/catalyst/analysis/DecimalPrecision.scala

...k/sql/catalyst/analysis/ResolveTableValuedFunctions.scala

...org/apache/spark/sql/catalyst/analysis/TypeCoercion.scala

...apache/spark/sql/catalyst/analysis/timeZoneAnalysis.scala

...n/scala/org/apache/spark/sql/catalyst/analysis/view.scala

...la/org/apache/spark/sql/catalyst/optimizer/subquery.scala

...apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala

...rk/sql/catalyst/plans/logical/basicLogicalOperators.scala

...rg/apache/spark/sql/catalyst/analysis/AnalysisSuite.scala

...rg/apache/spark/sql/catalyst/plans/LogicalPlanSuite.scala

sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala

...g/apache/spark/sql/execution/datasources/DataSource.scala

...la/org/apache/spark/sql/execution/datasources/rules.scala

...t/scala/org/apache/spark/sql/execution/PlannerSuite.scala

...main/scala/org/apache/spark/sql/hive/HiveStrategies.scala