Removed the "Submissions extended" banner

Author: sbliudze

2025/README.md

@@ -6,10 +6,6 @@ Welcome to DisCoTec 2025!
 
 DisCoTec 2025 will take place in [Lille, France](venue), June 16-20, 2025, hosted by the [University of Lille](https://international.univ-lille.fr/en/).
 
-> 📣📣📣 **Important** ![](mega-right.png) <br />
-> **[Submission deadlines](./dates) have been extended**
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 ## Invited Speakers
 
 DisCoTec 2025 will host the following invited speakers.