simplify and remove unnecessary stuff

lib/languages.nix

@@ -1,13 +1,9 @@
 {lib}: let
   inherit (builtins) isString getAttr;
   inherit (lib.options) mkOption;
-  inherit (lib.strings) concatStringsSep;
-  inherit (lib.types) listOf bool str submodule attrsOf anything either nullOr oneOf enum;
-  inherit (lib.attrsets) attrNames;
+  inherit (lib.types) listOf bool str submodule attrsOf anything either nullOr;
   inherit (lib.nvim.attrsets) mapListToAttrs;
   inherit (lib.nvim.types) luaInline;
-  inherit (lib.lists) isList;
-  inherit (lib) genAttrs recursiveUpdate;
 in {
   # TODO: remove
   diagnosticsToLua = {
@@ -38,18 +34,6 @@ in {
       description = "Turn on ${desc} for enabled languages by default";
     };
 
-  # resolveLspOptions
-  # servers: AttrsOf lspOptions
-  # selected: AttrsOf lspOptions | List of string keys from servers
-  # Returns: AttrsOf lspOptions
-  resolveLspOptions = {
-    servers,
-    selected,
-  }:
-    if isList selected
-    then genAttrs selected (name: servers.${name})
-    else selected;
-
   lspOptions = submodule {
     freeformType = attrsOf anything;
     options = {
@@ -93,27 +77,4 @@ in {
       };
     };
   };
-
-  mkLspOption = {servers, ...} @ args: let
-    serverNames = attrNames servers;
-    defaultAttrs = {
-      type = oneOf [
-        (attrsOf lib.nvim.languages.lspOptions)
-        (listOf (enum serverNames))
-      ];
-      description = ''
-        Either a full set of selected LSP options as an attribute set,
-        or a list of server names from: ${concatStringsSep ", " serverNames}.
-      '';
-      default = {};
-      example = {
-        clangd = {
-          filetypes = ["c"];
-          root_markers = ["CMakeLists.txt"];
-        };
-      };
-    };
-    cleanedArgs = removeAttrs args ["servers"];
-  in
-    mkOption (recursiveUpdate defaultAttrs cleanedArgs);
 }