[CORE] Minor edits.

Author: eaplatanios

api/src/main/scala/org/platanios/tensorflow/api/core/client/Session.scala

@@ -71,9 +71,11 @@ class Session private[api](
     */
   @throws[IllegalStateException]
   def run[F, E, R](
-      feeds: FeedMap = FeedMap.empty, fetches: F = Seq.empty[Output],
-      targets: E = Traversable.empty[Op], options: Option[RunOptions] = None)
-      (implicit executable: Executable[E], fetchable: Fetchable.Aux[F, R]): R = {
+      feeds: FeedMap = FeedMap.empty,
+      fetches: F = Seq.empty[Output],
+      targets: E = Traversable.empty[Op],
+      options: Option[RunOptions] = None
+  )(implicit executable: Executable[E], fetchable: Fetchable.Aux[F, R]): R = {
     runHelper(feeds = feeds, fetches = fetches, targets = targets, options = options)._1
   }
 
@@ -106,18 +108,23 @@ class Session private[api](
     */
   @throws[IllegalStateException]
   def runWithMetadata[F, E, R](
-      feeds: FeedMap = FeedMap.empty, fetches: F = Seq.empty[Output], targets: E = Traversable.empty[Op],
-      options: Option[RunOptions] = None)
-      (implicit executable: Executable[E], fetchable: Fetchable.Aux[F, R]): (R, Option[RunMetadata]) = {
+      feeds: FeedMap = FeedMap.empty,
+      fetches: F = Seq.empty[Output],
+      targets: E = Traversable.empty[Op],
+      options: Option[RunOptions] = None
+  )(implicit executable: Executable[E], fetchable: Fetchable.Aux[F, R]): (R, Option[RunMetadata]) = {
     runHelper(feeds = feeds, fetches = fetches, targets = targets, options = options, wantMetadata = true)
   }
 
   /** Helper method for [[run]] and [[runWithMetadata]]. */
   @throws[IllegalStateException]
   private[api] def runHelper[F, E, R](
-      feeds: FeedMap = FeedMap.empty, fetches: F = Seq.empty[Output], targets: E = Traversable.empty[Op],
-      options: Option[RunOptions] = None, wantMetadata: Boolean = false)
-      (implicit executable: Executable[E], fetchable: Fetchable.Aux[F, R]): (R, Option[RunMetadata]) = {
+      feeds: FeedMap = FeedMap.empty,
+      fetches: F = Seq.empty[Output],
+      targets: E = Traversable.empty[Op],
+      options: Option[RunOptions] = None,
+      wantMetadata: Boolean = false
+  )(implicit executable: Executable[E], fetchable: Fetchable.Aux[F, R]): (R, Option[RunMetadata]) = {
     if (nativeHandle == 0)
       throw new IllegalStateException("This session has already been closed.")
     // TODO: !!! [JNI] Add a call to 'extend' once some JNI issues are resolved.

examples/src/main/scala/org/platanios/tensorflow/examples/MNIST.scala

@@ -130,26 +130,3 @@ object MNIST {
     // }
   }
 }
-
-case class DummyAccuracy(
-    variablesCollections: Set[Graph.Key[Variable]] = Set(METRIC_VARIABLES),
-    valuesCollections: Set[Graph.Key[Output]] = Set(METRIC_VALUES),
-    updatesCollections: Set[Graph.Key[Output]] = Set(METRIC_UPDATES),
-    resetsCollections: Set[Graph.Key[Op]] = Set(METRIC_RESETS),
-    override val name: String = "Accuracy"
-) extends Metric[(Output, (Output, Output)), Output] {
-  private[this] val accuracyMetric =
-    Accuracy(variablesCollections, valuesCollections, updatesCollections, resetsCollections, name)
-
-  override def compute(values: (Output, (Output, Output)), weights: Output = null, name: String = name): Output = {
-    accuracyMetric.compute((values._1.argmax(-1), values._2._2), weights, name)
-  }
-
-  override def streaming(
-      values: (Output, (Output, Output)),
-      weights: Output = null,
-      name: String = name
-  ): Metric.StreamingInstance[Output] = {
-    accuracyMetric.streaming((values._1.argmax(-1), values._2._2), weights, name)
-  }
-}