More cleanup

core/src/mindustry/game/Saves.java

@@ -311,7 +311,7 @@ public class Saves{
 
         public void delete(){
             file.delete();
-            saves.removeValue(this, true);
+            saves.remove(this, true);
             if(this == current){
                 current = null;
             }

core/src/mindustry/game/SpawnGroup.java

@@ -5,7 +5,6 @@ import arc.util.serialization.Json.Serializable;
 import arc.util.serialization.JsonValue;
 import mindustry.content.*;
 import mindustry.ctype.ContentType;
-import mindustry.entities.type.BaseUnit;
 import mindustry.type.*;
 
 import static mindustry.Vars.content;

core/src/mindustry/game/Teams.java

@@ -54,10 +54,10 @@ public class Teams{
         return false;
     }
 
-    public void eachEnemyCore(Team team, Cons<TileEntity> ret){
+    public void eachEnemyCore(Team team, Cons<Tilec> ret){
         for(TeamData data : active){
             if(areEnemies(team, data.team)){
-                for(TileEntity tile : data.cores){
+                for(Tilec tile : data.cores){
                     ret.get(tile);
                 }
             }

core/src/mindustry/game/Tutorial.java

@@ -240,7 +240,7 @@ public class Tutorial{
         //utility
 
         static void placeBlocks(){
-            TileEntity core = state.teams.playerCores().first();
+            Tilec core = state.teams.playerCores().first();
             for(int i = 0; i < blocksToBreak; i++){
                 world.ltile(core.tile.x + blockOffset, core.tile.y + i).remove();
                 world.tile(core.tile.x + blockOffset, core.tile.y + i).setBlock(Blocks.scrapWall, state.rules.defaultTeam);
@@ -248,7 +248,7 @@ public class Tutorial{
         }
 
         static boolean blocksBroken(){
-            TileEntity core = state.teams.playerCores().first();
+            Tilec core = state.teams.playerCores().first();
 
             for(int i = 0; i < blocksToBreak; i++){
                 if(world.tile(core.tile.x + blockOffset, core.tile.y + i).block() == Blocks.scrapWall){