Remove redundant check to string value

Sources/Model/Player.cs

@@ -13,7 +13,7 @@ namespace Model
             }
             internal set
             {
-                if (!String.IsNullOrWhiteSpace(value) && !String.IsNullOrEmpty(value))
+                if (!String.IsNullOrWhiteSpace(value))
                 {
                     name = value;
                 }

Sources/Model/PlayerManager.cs

@@ -55,7 +55,7 @@ namespace Model
         /// <returns>player with said name</returns>
         public Player GetOneByName(string name)
         {
-            if (!String.IsNullOrWhiteSpace(name) && !String.IsNullOrEmpty(name))
+            if (!String.IsNullOrWhiteSpace(name))
             {
                 Player result = players.FirstOrDefault(p => p.Name.Equals(name));
                 return new Player(result); // THIS IS A COPY (using a copy constructor)