enable nullable propeties without a macro

object_store.cpp

@@ -555,11 +555,7 @@ InvalidNullabilityException::InvalidNullabilityException(std::string const& obje
         m_what = "'Object' property '" + property.name + "' must be nullable.";
     }
     else {
-#if REALM_NULL_STRINGS == 1
         m_what = "Array or Mixed property '" + property.name + "' cannot be nullable";
-#else
-        m_what = "Only 'Object' property types are nullable";
-#endif
     }
 }
 

schema.cpp

@@ -71,11 +71,7 @@ void Schema::validate() const
 
             // check nullablity
             if (prop.is_nullable) {
-#if REALM_NULL_STRINGS == 1
                 if (prop.type == PropertyTypeArray || prop.type == PropertyTypeAny) {
-#else
-                if (prop.type != PropertyTypeObject) {
-#endif
                     exceptions.emplace_back(InvalidNullabilityException(object.name, prop));
                 }
             }