fix: hide import theme (#438)

Author: dgaponov

src/components/Themes/Themes.tsx

@@ -47,9 +47,6 @@ export const Themes = () => {
     const closeExportDialog = React.useCallback(() => {
         setIsExportDialogVisible(false);
     }, []);
-    const openImportDialog = React.useCallback(() => {
-        setIsImportDialogVisible(true);
-    }, []);
     const closeImportDialog = React.useCallback(() => {
         setIsImportDialogVisible(false);
     }, []);
@@ -107,14 +104,6 @@ export const Themes = () => {
     const ThemeActionsButtons = useCallback(
         () => (
             <Flex direction="row" gap={2}>
-                <Button
-                    className={b('theme-action-btn')}
-                    view="outlined-action"
-                    size="xl"
-                    onClick={openImportDialog}
-                >
-                    <Text>{t('btn_import_theme')}</Text>
-                </Button>
                 <Button
                     className={b('theme-action-btn')}
                     view="action"