nix: remove unused shells

flake.nix

@@ -104,15 +104,6 @@
               packages.python-scripts
             ];
           };
-          analyze-m100-agg-power = pkgs.mkShell {
-            buildInputs = [
-              pkgs.R
-              pkgs.rPackages.tidyverse
-              pkgs.rPackages.argparse
-              pkgs.python3
-            ];
-          };
-
           simulation = pkgs.mkShell {
             buildInputs = [
               packages.batsim
@@ -122,14 +113,6 @@
             BATSIM_ROOT_PATH="${batsim-flake}";
             EDC_LIBRARY_PATH="${packages.easypower-sched-lib}/lib";
           };
-
-          r = pkgs.mkShell {
-            buildInputs = [
-              pkgs.R
-              pkgs.rPackages.tidyverse
-              pkgs.rPackages.viridis
-            ];
-          };
           r-notebook = pkgs.mkShell {
             buildInputs = [
               pkgs.pandoc
@@ -142,27 +125,11 @@
               pkgs.rPackages.viridis
             ];
           };
-
-          python = pkgs.mkShell {
-            buildInputs = [
-              py
-              pyPkgs.ipython
-              pyPkgs.pandas
-              packages.fastparquet-2402
-            ];
-          };
-
           typst-shell = pkgs.mkShell {
             buildInputs = [
               typstpkgs.typst-dev
             ];
           };
-
-          parquet-data-extract = pkgs.mkShell {
-            buildInputs = [
-              pkgs.pqrs
-            ];
-          };
         };
       }
     );