Update thesis.md with new application deadlines

Removed some redundant content.

Author: noah-13

_pages/thesis.md

@@ -56,13 +56,6 @@ Deadlines for the summer semester 2025-2026:
 
 - MSc students apply before **Monday February 9, 2026**
 - BSc students apply before **Monday February 16, 2026**
-<!--
-
-* MSc students apply before **February 15, 2024**
-* BSc students apply before **February 29, 2024**
-* MSc students apply before ~~**February 24, 2023**~~ ~~**August 31, 2023**~~ (closed)
-* BSc students apply before ~~**March 6, 2023**~~ ~~**September 4, 2023**~~ (closed)
--->
 
 To apply, please send your application material with subject "[BSc (or MSc) thesis project at MaiNLP - inquiry [Name and which semester]" to: **thesisplank@cis.lmu.de**