Revert "Add snappi-convergence back (#22487)" (#22504)

This reverts commit 7aae721.

Build is failing, need to merge this revert PR:

Add the new version failure is fixed with sonic-net/sonic-mgmt#18044, we're good with the snappi new version

Author: yejianquan

dockers/docker-sonic-mgmt/Dockerfile.j2

@@ -105,7 +105,6 @@ RUN python3 -m pip install aiohttp \
                  setuptools-rust \
                  six \
                  snappi==1.27.1 \
-                 snappi-convergence==0.4.1 \
                  snappi-ixnetwork==1.27.2 \
                  tabulate \
                  textfsm==1.1.2 \