shorten import

Author: kiszk

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/CodeGenerator.scala

@@ -32,7 +32,7 @@ import org.apache.spark.metrics.source.CodegenMetrics
 import org.apache.spark.sql.catalyst.InternalRow
 import org.apache.spark.sql.catalyst.expressions._
 import org.apache.spark.sql.catalyst.expressions.codegen.Block._
-import org.apache.spark.sql.catalyst.expressions.codegen.compiler.{CompilerBase, JaninoCompiler, JdkCompiler}
+import org.apache.spark.sql.catalyst.expressions.codegen.compiler._
 import org.apache.spark.sql.catalyst.util.{ArrayData, MapData}
 import org.apache.spark.sql.internal.SQLConf
 import org.apache.spark.sql.types._