remove unused DataType.java

core/src/mindustry/logic/DataType.java

@@ -1,24 +0,0 @@
-package mindustry.logic;
-
-import arc.graphics.*;
-import mindustry.graphics.*;
-
-/** The types of data a node field can be. */
-public enum DataType{
-    /** A double. Used for integer calculations as well. */
-    number(Pal.place),
-    /** Any type of content, e.g. item. */
-    content(Color.cyan),
-    /** A building of a tile. */
-    building(Pal.items),
-    /** A unit on the map. */
-    unit(Pal.health),
-    /** Java string */
-    string(Color.royal);
-
-    public final Color color;
-
-    DataType(Color color){
-        this.color = color;
-    }
-}