remove speakers

Author: yguitton

W4E/w4e2026.qmd

@@ -22,7 +22,7 @@ The pre-registration for the school is now open ! [Follow the link to pre-regist
 **Costs**: 1300€ for academic and 2500 € for private institution (to cover expenses for trainers, organization, materials and meals). A special discount of 100€ is offered for ![RFMF](https://www.rfmf.fr/) members 2025.
 
 **Invited speaker**:\
-*Ultra-high resolution mass spectrometry and metabolomics*, by **Hélène Lavanant** (COBRA, Univ Rouen) & **Isabelle Schmitz** (PBS, CNRS, Rouen)
+To be defined
 
 **Previsionnal Program of online session**: