Remove useless code

lib/src/utils/json.dart

@@ -1,132 +1,4 @@
-import 'dart:convert';
-import 'dart:typed_data';
-
-import 'package:async/async.dart';
 import 'package:deep_pick/deep_pick.dart';
-import 'package:fast_immutable_collections/fast_immutable_collections.dart';
-import 'package:http/http.dart';
-import 'package:lichess_mobile/src/model/common/errors.dart';
-import 'package:logging/logging.dart';
-import 'package:result_extensions/result_extensions.dart';
-
-typedef Mapper<T> = T Function(Map<String, dynamic>);
-
-/// Reads a [T] object from a JSON object.
-Result<T> readJsonObject<T>(
-  Map<String, dynamic> obj, {
-  required Mapper<T> mapper,
-  Logger? logger,
-}) {
-  final result = Result(() => mapper(obj));
-  result.match(
-    onError: (error, st) {
-      logger?.severe('Could not read json object as $T: $error\n$st');
-    },
-  );
-  return result;
-}
-
-T readJsonObjectFromBytes<T>(
-  Uint8List bytes, {
-  required Mapper<T> mapper,
-  Logger? logger,
-}) {
-  final json = jsonDecode(utf8.decode(bytes));
-  if (json is! Map<String, dynamic>) {
-    logger?.severe('Could not read json object as $T: expected an object.');
-    throw DataFormatException();
-  }
-  return mapper(json);
-}
-
-/// Reads a [T] object from a [Response] returning a JSON object.
-Result<T> readJsonObjectFromResponse<T>(
-  Response response, {
-  required Mapper<T> mapper,
-  Logger? logger,
-}) {
-  final json = jsonDecode(utf8.decode(response.bodyBytes));
-  if (json is! Map<String, dynamic>) {
-    logger?.severe('Could not read json object as $T: expected an object.');
-    throw DataFormatException();
-  }
-  return readJsonObject(json, mapper: mapper, logger: logger);
-}
-
-/// Reads a list of [T] objects from a JSON array.
-Result<IList<T>> readJsonListOfObjects<T>(
-  List<dynamic> list, {
-  required Mapper<T> mapper,
-  Logger? logger,
-}) {
-  final result = Result(() {
-    return IList(
-      list.map((e) {
-        if (e is! Map<String, dynamic>) {
-          logger?.severe('Could not read json object as $T');
-          throw DataFormatException();
-        }
-        return mapper(e);
-      }),
-    );
-  });
-  result.match(
-    onError: (error, st) {
-      logger?.severe('Could not read json as list of $T: $error\n$st');
-    },
-  );
-  return result;
-}
-
-/// Reads a list of [T] objects from a [Response] returning a JSON array.
-Result<IList<T>> readJsonListOfObjectsFromResponse<T>(
-  Response response, {
-  required Mapper<T> mapper,
-  Logger? logger,
-}) {
-  return Result(() {
-    final dynamic list = jsonDecode(utf8.decode(response.bodyBytes));
-    if (list is! List<dynamic>) {
-      logger?.severe('Received json is not a list');
-      throw DataFormatException();
-    }
-    return list;
-  }).flatMap(
-    (list) => readJsonListOfObjects(
-      list,
-      mapper: mapper,
-      logger: logger,
-    ),
-  );
-}
-
-/// Reads a list of [T] objects from a newline-delimited json [Response].
-Result<IList<T>> readNdJsonListFromResponse<T>(
-  Response response, {
-  required Mapper<T> mapper,
-  Logger? logger,
-}) {
-  final result = Result(() {
-    final utf8Body = utf8.decode(response.bodyBytes);
-    final lines = utf8Body.split('\n');
-    return IList(
-      lines.where((e) => e.isNotEmpty && e != '\n').map((e) {
-        final json = jsonDecode(e);
-        if (json is! Map<String, dynamic>) {
-          logger
-              ?.severe('Could not read json object as $T: expected an object.');
-          throw DataFormatException();
-        }
-        return mapper(json);
-      }),
-    );
-  });
-  result.match(
-    onError: (error, st) =>
-        logger?.severe('Could not read ndjson as list of $T: $error\n$st'),
-  );
-  return result;
-}
 
 extension TimeExtension on Pick {
   /// Matches a DateTime from milliseconds since unix epoch.