remove unnecessary nullable types

Author: Elektryk-Andrzej

MethodSystem/Methods/PlayerDataMethods/ClearPlayerDataMethod.cs

@@ -7,7 +7,7 @@ namespace SER.MethodSystem.Methods.PlayerDataMethods;
 
 public class ClearPlayerDataMethod : SynchronousMethod
 {
-    public override string? Description => "Clears data associated with specified players";
+    public override string Description => "Clears data associated with specified players";
 
     public override Argument[] ExpectedArguments =>
     [

TokenSystem/Tokens/ExpressionTokens/LiteralVariableExpressionToken.cs

@@ -22,5 +22,5 @@ protected override IParseResult InternalParse(BaseToken[] tokens)
 
     public override TryGet<Value> Value() => _varToken.Value.Value();
 
-    public override Type[]? PossibleValueTypes => [typeof(LiteralValue)];
+    public override Type[] PossibleValueTypes => [typeof(LiteralValue)];
 }

TokenSystem/Tokens/ParenthesesToken.cs

@@ -73,6 +73,6 @@ public TryGet<Value> Value()
         return literalValue;
     }
 
-    public Type[]? PossibleValueTypes => [typeof(LiteralValue)];
+    public Type[] PossibleValueTypes => [typeof(LiteralValue)];
     public bool IsConstant => false;
 }