Cleanup(idvalidator): Just don't use isValid function and instead

directly check if input is a printable char

apps/opencs/view/world/idvalidator.cpp

@@ -2,11 +2,6 @@
 
 #include <components/misc/strings/lower.hpp>
 
-bool CSVWorld::IdValidator::isValid(const QChar& c, bool first) const
-{
-    return c.isPrint() ? true : false;
-}
-
 CSVWorld::IdValidator::IdValidator(bool relaxed, QObject* parent)
     : QValidator(parent)
     , mRelaxed(relaxed)
@@ -86,7 +81,7 @@ QValidator::State CSVWorld::IdValidator::validate(QString& input, int& pos) cons
             {
                 prevScope = false;
 
-                if (!isValid(*iter, first))
+                if (!iter->isPrint())
                     return QValidator::Invalid;
             }
         }

apps/opencs/view/world/idvalidator.hpp

@@ -13,9 +13,6 @@ namespace CSVWorld
         std::string mNamespace;
         mutable std::string mError;
 
-    private:
-        bool isValid(const QChar& c, bool first) const;
-
     public:
         IdValidator(bool relaxed = false, QObject* parent = nullptr);
         ///< \param relaxed Relaxed rules for IDs that also functino as user visible text