improved code

iOSClient/Main/CCDetail.m

@@ -137,7 +137,7 @@
     
     // document ? cancel preview
     if ([self.metadataDetail.typeFile isEqualToString:k_metadataTypeFile_document]) {
-        [[NSFileManager defaultManager] removeItemAtPath:[CCUtility getDirectoryProviderStorageIconFileID:self.metadataDetail.fileID fileNameView:self.metadataDetail.fileNameView] error:nil];
+        
     }
 }