Fix style errors

Author: holdenk

core/src/main/scala/org/apache/spark/SparkContext.scala

@@ -348,7 +348,7 @@ class SparkContext(config: SparkConf) extends Logging with ExecutorAllocationCli
    * Valid log levels include: ALL, DEBUG, ERROR, FATAL, INFO, OFF, TRACE, WARN
    * Invalid log level defaults to DEBUG
    */
-  def setLoggingLevel(logLevel: String) = {
+  def setLoggingLevel(logLevel: String) {
     Utils.setLoggingLevel(org.apache.log4j.Level.toLevel(logLevel))
   }
 

core/src/main/scala/org/apache/spark/api/java/JavaSparkContext.scala

@@ -760,7 +760,7 @@ class JavaSparkContext(val sc: SparkContext)
    * Valid log levels include: ALL, DEBUG, ERROR, FATAL, INFO, OFF, TRACE, WARN
    * Invalid log level defaults to DEBUG
    */
-  def setLoggingLevel(logLevel: String) = {
+  def setLoggingLevel(logLevel: String) {
     sc.setLoggingLevel(logLevel)
   }