Fix warnings

forge-gui-mobile-dev/src/forge/app/Main.java

@@ -96,8 +96,7 @@ public class Main {
 
         @Override
         public void preventSystemSleep(boolean preventSleep) {
-            int k = 1;
-            k++;
+            
         }
     }
 }

forge-gui/src/main/java/forge/quest/QuestDraftUtils.java

@@ -1,6 +1,7 @@
 package forge.quest;
 
 import com.google.common.collect.Lists;
+
 import forge.GuiBase;
 import forge.deck.Deck;
 import forge.deck.DeckGroup;
@@ -269,6 +270,7 @@ public class QuestDraftUtils {
         newMatch.startMatch(rules, null, nextMatch.matchStarter, nextMatch.humanPlayer, GuiBase.getInterface().getNewGuiGame());
     }
 
+    @SuppressWarnings("unused")
     private static List<RegisteredPlayer> registerTournamentPlayers(TournamentPairing pairing, QuestEventDraft draft, DeckGroup decks) {
         List<RegisteredPlayer> registered = Lists.newArrayList();
         for (TournamentPlayer pl : pairing.getPairedPlayers()) {
@@ -281,6 +283,7 @@ public class QuestDraftUtils {
         return registered;
     }
 
+    @SuppressWarnings("unused")
     private static void updateFromTournament(final IGuiGame gui) {
         // If Human involved launch into a UI, if not show a "Simulating" screen. And simulate the game off-thread
         if (waitForUserInput || matchInProgress || gui == null) {

forge-gui/src/main/java/forge/tournament/system/TournamentRoundRobin.java

@@ -4,7 +4,6 @@ import com.google.common.collect.Lists;
 import forge.player.GamePlayerUtil;
 
 import java.util.ArrayList;
-import java.util.HashSet;
 import java.util.List;
 
 @SuppressWarnings("serial")
@@ -30,7 +29,6 @@ public class TournamentRoundRobin extends AbstractTournament {
     public void generateActivePairings() {
         int numPlayers = this.remainingPlayers.size();
         List<TournamentPlayer> pair = new ArrayList<>();
-        int count = 0;
 
         List<TournamentPlayer> roundPairings = Lists.newArrayList(this.remainingPlayers);
         if (numPlayers % 2 == 1) {