TF-4176 Change minimize behavior in mail composer

lib/features/composer/presentation/widgets/web/desktop_app_bar_composer_widget.dart

@@ -35,16 +35,6 @@ class DesktopAppBarComposerWidget extends StatelessWidget {
           Expanded(child: TitleComposerWidget(emailSubject: emailSubject)),
           if (onChangeDisplayModeAction != null)
             ... [
-                  TMailButtonWidget.fromIcon(
-                    icon: imagePaths.icDoubleArrowDown,
-                    backgroundColor: Colors.transparent,
-                    tooltipMessage: AppLocalizations.of(context).hide,
-                    iconSize: AppBarComposerWidgetStyle.iconSize,
-                    iconColor: AppBarComposerWidgetStyle.iconColor,
-                    padding: AppBarComposerWidgetStyle.iconPadding,
-                    onTapActionCallback: () => onChangeDisplayModeAction!(ScreenDisplayMode.hidden),
-                  ),
-                  const SizedBox(width: AppBarComposerWidgetStyle.space),
                   TMailButtonWidget.fromIcon(
                     icon: imagePaths.icMinimize,
                     backgroundColor: Colors.transparent,

lib/features/composer/presentation/widgets/web/minimize_composer_widget.dart

@@ -68,16 +68,6 @@ class MinimizeComposerWidget extends StatelessWidget {
               onTapActionCallback: () => onChangeDisplayModeAction(ScreenDisplayMode.normal)
             ),
             const SizedBox(width: MinimizeComposerWidgetStyle.space),
-            TMailButtonWidget.fromIcon(
-              icon: imagePaths.icDoubleArrowDown,
-              backgroundColor: Colors.transparent,
-              tooltipMessage: AppLocalizations.of(context).hide,
-              iconSize: MinimizeComposerWidgetStyle.iconSize,
-              iconColor: MinimizeComposerWidgetStyle.iconColor,
-              padding: MinimizeComposerWidgetStyle.iconPadding,
-              onTapActionCallback: () => onChangeDisplayModeAction(ScreenDisplayMode.hidden),
-            ),
-            const SizedBox(width: MinimizeComposerWidgetStyle.space),
             Expanded(child: TitleComposerWidget(emailSubject: emailSubject)),
           ]
         )