Revert "[SPARK-16839][SQL] redundant aliases after cleanupAliases"

R/pkg/inst/tests/testthat/test_sparkSQL.R

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

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

...rg/apache/spark/sql/catalyst/expressions/Projection.scala

...e/spark/sql/catalyst/expressions/complexTypeCreator.scala

...ala/org/apache/spark/sql/catalyst/parser/AstBuilder.scala

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

...che/spark/sql/catalyst/expressions/ComplexTypeSuite.scala

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

...he/spark/sql/execution/command/AnalyzeColumnCommand.scala

sql/core/src/test/resources/sql-tests/inputs/group-by.sql

...ore/src/test/resources/sql-tests/results/group-by.sql.out

.../main/scala/org/apache/spark/sql/hive/test/TestHive.scala

sql/hive/src/test/resources/sqlgen/subquery_in_having_2.sql

...org/apache/spark/sql/catalyst/LogicalPlanToSQLSuite.scala