chore: remove watcher polling option (#7480)

* remove watcher polling

* fix lint

* add db migration

mobile/openapi/lib/model/system_config_library_watch_dto.dart

@@ -14,37 +14,25 @@ class SystemConfigLibraryWatchDto {
   /// Returns a new [SystemConfigLibraryWatchDto] instance.
   SystemConfigLibraryWatchDto({
     required this.enabled,
-    required this.interval,
-    required this.usePolling,
   });
 
   bool enabled;
 
-  int interval;
-
-  bool usePolling;
-
   @override
   bool operator ==(Object other) => identical(this, other) || other is SystemConfigLibraryWatchDto &&
-    other.enabled == enabled &&
-    other.interval == interval &&
-    other.usePolling == usePolling;
+    other.enabled == enabled;
 
   @override
   int get hashCode =>
     // ignore: unnecessary_parenthesis
-    (enabled.hashCode) +
-    (interval.hashCode) +
-    (usePolling.hashCode);
+    (enabled.hashCode);
 
   @override
-  String toString() => 'SystemConfigLibraryWatchDto[enabled=$enabled, interval=$interval, usePolling=$usePolling]';
+  String toString() => 'SystemConfigLibraryWatchDto[enabled=$enabled]';
 
   Map<String, dynamic> toJson() {
     final json = <String, dynamic>{};
       json[r'enabled'] = this.enabled;
-      json[r'interval'] = this.interval;
-      json[r'usePolling'] = this.usePolling;
     return json;
   }
 
@@ -57,8 +45,6 @@ class SystemConfigLibraryWatchDto {
 
       return SystemConfigLibraryWatchDto(
         enabled: mapValueOfType<bool>(json, r'enabled')!,
-        interval: mapValueOfType<int>(json, r'interval')!,
-        usePolling: mapValueOfType<bool>(json, r'usePolling')!,
       );
     }
     return null;
@@ -107,8 +93,6 @@ class SystemConfigLibraryWatchDto {
   /// The list of required keys that must be present in a JSON.
   static const requiredKeys = <String>{
     'enabled',
-    'interval',
-    'usePolling',
   };
 }