Update paper.bib

Paper/paper.bib

@@ -98,13 +98,3 @@ @article{Yousefirizi2023-ax
   url       = {https://www.sciencedirect.com/science/article/pii/S1939865424004764},
   author    = {Yousefirizi, Fereshteh and Liyanage, Annudesh and Klyuzhin, Ivan S. and Rahmim, Arman}
 }
-
-@article{oreiller2022head,
-  title={Head and neck tumor segmentation in PET/CT: the HECKTOR challenge},
-  author={Oreiller, Valentin and Andrearczyk, Vincent and Jreige, Mario and Boughdad, Sarah and Elhalawani, Hesham and Castelli, Joel and Valli{\`e}res, Martin and Zhu, Simeng and Xie, Juanying and Peng, Ying and others},
-  journal={Medical image analysis},
-  volume={77},
-  pages={102336},
-  year={2022},
-  publisher={Elsevier}
-}