[grid] Code styling and removing unused import

[skip ci]

Author: diemol

java/server/src/org/openqa/selenium/grid/distributor/selector/DefaultSlotSelector.java

@@ -18,6 +18,7 @@
 package org.openqa.selenium.grid.distributor.selector;
 
 import com.google.common.annotations.VisibleForTesting;
+
 import org.openqa.selenium.Capabilities;
 import org.openqa.selenium.grid.config.Config;
 import org.openqa.selenium.grid.data.NodeStatus;
@@ -31,6 +32,10 @@
 
 public class DefaultSlotSelector implements SlotSelector {
 
+  public static SlotSelector create(Config config) {
+    return new DefaultSlotSelector();
+  }
+
   @Override
   public Set<SlotId> selectSlot(Capabilities capabilities, Set<NodeStatus> nodes) {
     // First, filter the Nodes that support the required capabilities. Then, the filtered Nodes
@@ -51,7 +56,7 @@ public Set<SlotId> selectSlot(Capabilities capabilities, Set<NodeStatus> nodes)
           // And use the node id as a tie-breaker.
           .thenComparing(NodeStatus::getNodeId))
       .flatMap(node -> node.getSlots().stream()
-        .filter(slot -> slot.getSession()==null)
+        .filter(slot -> slot.getSession() == null)
         .filter(slot -> slot.isSupporting(capabilities))
         .map(Slot::getId))
       .collect(toImmutableSet());
@@ -65,8 +70,4 @@ long getNumberOfSupportedBrowsers(NodeStatus nodeStatus) {
       .distinct()
       .count();
   }
-
-  public static SlotSelector create(Config config) {
-    return new DefaultSlotSelector();
-  }
 }

java/server/src/org/openqa/selenium/grid/node/local/LocalNode.java

@@ -24,6 +24,7 @@
 import com.google.common.cache.RemovalListener;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
+
 import org.openqa.selenium.Capabilities;
 import org.openqa.selenium.ImmutableCapabilities;
 import org.openqa.selenium.NoSuchSessionException;
@@ -82,7 +83,6 @@
 import java.util.Set;
 import java.util.UUID;
 import java.util.concurrent.ExecutionException;
-import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Logger;
 import java.util.stream.Collectors;
@@ -468,7 +468,7 @@ private URI rewrite(String path) {
     }
   }
 
-  private void  killSession(SessionSlot slot) {
+  private void killSession(SessionSlot slot) {
     currentSessions.invalidate(slot.getSession().getId());
     // Attempt to stop the session
     if (!slot.isAvailable()) {