refactor: widgets dir

lib/components/dialogs/adaptive_flat_button.dart

@@ -1,34 +0,0 @@
-import 'package:fluffychat/utils/platform_infos.dart';
-import 'package:flutter/cupertino.dart';
-import 'package:flutter/material.dart';
-
-class AdaptiveFlatButton extends StatelessWidget {
-  final String label;
-  final Color textColor;
-  final Function onPressed;
-
-  const AdaptiveFlatButton({
-    Key key,
-    @required this.label,
-    this.textColor,
-    this.onPressed,
-  }) : super(key: key);
-
-  @override
-  Widget build(BuildContext context) {
-    if (PlatformInfos.isCupertinoStyle) {
-      return CupertinoDialogAction(
-        onPressed: onPressed,
-        textStyle: textColor != null ? TextStyle(color: textColor) : null,
-        child: Text(label),
-      );
-    }
-    return TextButton(
-      onPressed: onPressed,
-      child: Text(
-        label,
-        style: TextStyle(color: textColor),
-      ),
-    );
-  }
-}