update upcoming dev days section

Author: hturner

events/r-dev-days/index.md

@@ -16,15 +16,13 @@ the R Core Team and some will have R Core Developers participating directly.
 
 ## Upcoming events
 
-These are the planned events for 2025 - events that are tentative are shown in italics
-Links to the registration/application page and the corresponding deadline will be added as soon as these details are available.
+<!-- These are the planned events for 2025 - events that are tentative are shown in italics
+Links to the registration/application page and the corresponding deadline will be added as soon as these details are available. -->
 
 |          Satellite to         |       Where      | Date |   Deadline  |
 |:-----------------------------:|:----------------:|:-------------:|:---------:|
-| [Rencontres R 2025 (19-21 May)](https://pretix.eu/r-contributors/r-dev-day-rr2025/) | Mons, Belgium    | Thu 22 May  | Fri 18 Apr |
 | [useR! 2025 (8-10 Aug)](https://user2025.r-project.org/additional/r-dev-day)         | Durham, NC, USA  | Mon 11 Aug    | Tue 15 Apr |
 | [RSECon25 (9-11 Sep)](https://warwick.ac.uk/fac/sci/statistics/news/r-dev-day-rsecon25) | Warwick, UK      | Fri 12 Sep    | Wed 23 Apr |
-| _posit::conf (16-18 Sep)_       | _Atlanta, GA, USA_ | _Fri 19 Sep_    | _TBA_ |
 | [Shiny in Production (8-9 Oct)](https://pretix.eu/r-contributors/r-dev-day-sip-2025/) | Newcastle, UK    | 7-8 Oct       | Wed 24 Sep |
 
 ## What happens at an R Dev Day?