Re-organize all projects (#4166)

Content.Server/Objectives/Interfaces/IObjectiveRequirement.cs

@@ -1,6 +1,4 @@
-using Content.Server.Mobs;
-
-namespace Content.Server.Objectives.Interfaces
+namespace Content.Server.Objectives.Interfaces
 {
     public interface IObjectiveRequirement
     {
@@ -8,6 +6,6 @@ namespace Content.Server.Objectives.Interfaces
         /// Checks whether or not the entity & its surroundings are valid to be given the objective.
         /// </summary>
         /// <returns>Returns true if objective can be given.</returns>
-        bool CanBeAssigned(Mind mind);
+        bool CanBeAssigned(Mind.Mind mind);
     }
 }