Remove unused _revokeShareLink method and update share link message for clarity

b0esche_cloud/lib/widgets/share_file_dialog.dart

@@ -109,31 +109,6 @@ class _ShareFileDialogState extends State<ShareFileDialog> {
     }
   }
 
-  Future<void> _revokeShareLink() async {
-    setState(() {
-      _isLoading = true;
-      _error = null;
-    });
-
-    try {
-      final apiClient = getIt<ApiClient>();
-      final path = widget.orgId.isEmpty
-          ? '/orgs/files/${widget.fileId}/share'
-          : '/orgs/${widget.orgId}/files/${widget.fileId}/share';
-      await apiClient.delete(path);
-
-      setState(() {
-        _shareUrl = null;
-        _isLoading = false;
-      });
-    } catch (e) {
-      setState(() {
-        _error = 'Failed to revoke share link';
-        _isLoading = false;
-      });
-    }
-  }
-
   void _copyToClipboard() {
     if (_shareUrl != null) {
       Clipboard.setData(ClipboardData(text: _shareUrl!));
@@ -215,7 +190,7 @@ class _ShareFileDialogState extends State<ShareFileDialog> {
                 children: [
                   if (_shareUrl != null) ...[
                     Text(
-                      'Share link created. Anyone with this link can view and download the file.',
+                      'Anyone with this link can view and download the file.',
                       style: TextStyle(color: AppTheme.secondaryText),
                     ),
                     const SizedBox(height: 16),