Removing mentions in tests

bagel/src/test/scala/org/apache/spark/bagel/BagelSuite.scala

.../apache/spark/executor/CoarseGrainedExecutorBackend.scala

...ark/scheduler/cluster/CoarseGrainedSchedulerBackend.scala

core/src/test/scala/org/apache/spark/LocalSparkContext.scala

...c/test/scala/org/apache/spark/MapOutputTrackerSuite.scala

...st/scala/org/apache/spark/storage/BlockManagerSuite.scala

repl/src/test/scala/org/apache/spark/repl/ReplSuite.scala

...rc/main/scala/org/apache/spark/streaming/Checkpoint.scala

...a/org/apache/spark/streaming/util/MasterFailureTest.scala

...org/apache/spark/streaming/LocalJavaStreamingContext.java

...st/scala/org/apache/spark/streaming/CheckpointSuite.scala

...test/scala/org/apache/spark/streaming/TestSuiteBase.scala