Revert "fix: linux, window, workaround, mint, mate (#10146)" (#10184)

This reverts commit bd0a33e467.

flutter/lib/common.dart

@@ -1,7 +1,6 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:math';
-import 'dart:io';
 
 import 'package:back_button_interceptor/back_button_interceptor.dart';
 import 'package:desktop_multi_window/desktop_multi_window.dart';
@@ -3460,35 +3459,6 @@ Widget buildPresetPasswordWarning() {
   );
 }
 
-bool get isLinuxMateDesktop =>
-    isLinux &&
-    (Platform.environment['XDG_CURRENT_DESKTOP']?.toLowerCase() == 'mate' ||
-        Platform.environment['XDG_SESSION_DESKTOP']?.toLowerCase() == 'mate' ||
-        Platform.environment['DESKTOP_SESSION']?.toLowerCase() == 'mate');
-
-Map<String, dynamic>? _linuxOsDistro;
-
-String getLinuxOsDistroId() {
-  if (_linuxOsDistro == null) {
-    String osInfo = bind.getOsDistroInfo();
-    if (osInfo.isEmpty) {
-      _linuxOsDistro = {};
-    } else {
-      try {
-        _linuxOsDistro = jsonDecode(osInfo);
-      } catch (e) {
-        debugPrint('Failed to parse os info: $e');
-        // Don't call `bind.getOsDistroInfo()` again if failed to parse osInfo.
-        _linuxOsDistro = {};
-      }
-    }
-  }
-  return (_linuxOsDistro?['id'] ?? '') as String;
-}
-
-bool get isLinuxMint =>
-    getLinuxOsDistroId().toLowerCase().contains('linuxmint');
-
 // https://github.com/leanflutter/window_manager/blob/87dd7a50b4cb47a375b9fc697f05e56eea0a2ab3/lib/src/widgets/virtual_window_frame.dart#L44
 Widget buildVirtualWindowFrame(BuildContext context, Widget child) {
   boxShadow() => isMainDesktopWindow

flutter/lib/main.dart

@@ -485,16 +485,7 @@ class _AppState extends State<App> with WidgetsBindingObserver {
                     child = keyListenerBuilder(context, child);
                   }
                   if (isLinux) {
-                    // `(!(isLinuxMateDesktop || isLinuxMint))` is not used here for clarity.
-                    // `isLinuxMint` will call ffi function.
-                    if (!isLinuxMateDesktop) {
-                      if (!isLinuxMint) {
-                        debugPrint(
-                            'Linux distro is not linuxmint, and desktop is not mate, '
-                            'so we build virtual window frame.');
-                        child = buildVirtualWindowFrame(context, child);
-                      }
-                    }
+                    child = buildVirtualWindowFrame(context, child);
                   }
                   return child;
                 },

flutter/lib/web/bridge.dart

@@ -1848,9 +1848,5 @@ class RustdeskImpl {
     throw UnimplementedError("sessionGetConnToken");
   }
 
-  String getOsDistroInfo({dynamic hint}) {
-    return '';
-  }
-
   void dispose() {}
 }