clean license (#22)

Author: eleonorecharles

LICENSE

@@ -1,6 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2024, Datalayer
+Copyright (c) 2025, Datalayer
 All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
@@ -26,12 +26,4 @@ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
----
-
-This library reuse part of Jupyter Server code licensed under BSD 3-Clause License
-Source: https://github.com/jupyter-server/jupyter_server/blame/v2.12.0/jupyter_server/services/kernels/connection/base.py
-
-This library reuse part of traitlets code licensed under BSD 3-Clause License
-Source: https://github.com/ipython/traitlets/blob/v5.14.3/traitlets/log.py
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.