Swap pyright back for python-lsp-server

Add python-lsp-ruff plugin but NOT mypy as performance is horrible,
use mypy as standalone tool only

Remove some unused LSPs/linters/formatters

system/emacs.nix

@@ -23,11 +23,7 @@
     mupdf
     poppler_utils
 
-    # Linters
-    nodePackages.stylelint
-
     # Formatters
-    nodePackages.prettier
     nixfmt
     black
     isort
@@ -43,8 +39,6 @@
     shellcheck
     rust-analyzer
     luajitPackages.lua-lsp
-    nodePackages.pyright
-    nodePackages.yaml-language-server
-    nodePackages.bash-language-server
+    (python3.withPackages (ps: with ps; [ python-lsp-server python-lsp-ruff ]))
   ];
 }