chore(deps): don't require python-language-server in dev

scop · scop · commit 9e6b17121911 · 2023-02-10T00:30:11.000+02:00
It's not really required, and python-lsp-server is the one to use these
days anyway.
diff --git a/requirements-dev.txt b/requirements-dev.txt
@@ -2,6 +2,5 @@
 
 black ==23.1.0
 mypy ==0.990
-python-language-server
 nox
 ruff == 0.0.244
