Clean up unused imports

Author: liancheng

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

@@ -17,11 +17,10 @@
 
 package org.apache.spark.sql
 
-import org.scalatest.FunSuite
 import org.apache.spark.sql.TestData._
-import org.apache.spark.sql.test.TestSQLContext
-import org.apache.spark.sql.execution.SparkLogicalPlan
 import org.apache.spark.sql.columnar.InMemoryColumnarTableScan
+import org.apache.spark.sql.execution.SparkLogicalPlan
+import org.apache.spark.sql.test.TestSQLContext
 
 class CachedTableSuite extends QueryTest {
   TestData // Load test tables.