Implicit non-nullability for fields

core/src/mindustry/game/Objectives.java

@@ -2,7 +2,6 @@ package mindustry.game;
 
 import arc.*;
 import arc.scene.ui.layout.*;
-import arc.util.ArcAnnotate.*;
 import mindustry.ctype.*;
 import mindustry.type.*;
 
@@ -10,7 +9,7 @@ import mindustry.type.*;
 public class Objectives{
 
     public static class Research implements Objective{
-        public @NonNull UnlockableContent content;
+        public UnlockableContent content;
 
         public Research(UnlockableContent content){
             this.content = content;
@@ -50,7 +49,7 @@ public class Objectives{
 
     //TODO merge
     public abstract static class SectorObjective implements Objective{
-        public @NonNull SectorPreset preset;
+        public SectorPreset preset;
     }
 
     /** Defines a specific objective for a game. */