treewide: remove redundant 'builtins'

I keep forgetting `map` and `removeAttrs` are included at the top-level
in the prelude.

modules/home/mail/accounts/default.nix

@@ -11,7 +11,7 @@ let
       lib.mkDefault [ (lib.getExe pkgs.ambroisie.rbw-pass) "Mail" passName ];
 
     address = mkMailAddress address domain;
-    aliases = builtins.map (lib.flip mkMailAddress domain) aliases;
+    aliases = map (lib.flip mkMailAddress domain) aliases;
 
     inherit primary;
 

modules/home/wm/i3bar/default.nix

@@ -69,7 +69,7 @@ in
                     inactive_state = "Idle";
                   };
                 in
-                builtins.map (block: defaults // block) cfg.vpn.blockConfigs
+                map (block: defaults // block) cfg.vpn.blockConfigs
               )
             )
             {

modules/nixos/programs/steam/default.nix

@@ -23,7 +23,7 @@ in
       enable = true;
     };
 
-    environment.systemPackages = builtins.map lib.hiPrio [
+    environment.systemPackages = map lib.hiPrio [
       # Respect XDG conventions, leave my HOME alone
       (pkgs.writeShellScriptBin "steam" ''
         mkdir -p "${cfg.dataDir}"

modules/nixos/services/backup/default.nix

@@ -96,7 +96,7 @@ in
       # Contains the UID/GID map, and other useful state
       "/var/lib/nixos"
       # SSH host keys (and public keys for convenience)
-      (builtins.map (key: [ key.path "${key.path}.pub" ]) config.services.openssh.hostKeys)
+      (map (key: [ key.path "${key.path}.pub" ]) config.services.openssh.hostKeys)
     ];
 
     services.restic.backups.backblaze = {

modules/nixos/services/nginx/default.nix

@@ -188,14 +188,14 @@ in
       ++ (lib.flip lib.mapAttrsToList cfg.virtualHosts (_: { subdomain, ... } @ args:
       let
         conflicts = [ "port" "root" "socket" "redirect" ];
-        optionsNotNull = builtins.map (v: args.${v} != null) conflicts;
+        optionsNotNull = map (v: args.${v} != null) conflicts;
         optionsSet = lib.filter lib.id optionsNotNull;
       in
       {
         assertion = builtins.length optionsSet == 1;
         message = ''
           Subdomain '${subdomain}' must have exactly one of ${
-            lib.concatStringsSep ", " (builtins.map (v: "'${v}'") conflicts)
+            lib.concatStringsSep ", " (map (v: "'${v}'") conflicts)
           } configured.
         '';
       }))
@@ -208,7 +208,7 @@ in
         assertion = args.websocketsLocations != [ ] -> proxyPassUsed;
         message = ''
           Subdomain '${subdomain}' can only use 'websocketsLocations' with one of ${
-            lib.concatStringsSep ", " (builtins.map (v: "'${v}'") proxyPass)
+            lib.concatStringsSep ", " (map (v: "'${v}'") proxyPass)
           }.
         '';
       }))

overlays/default.nix

@@ -1,6 +1,6 @@
 # Automatically import all overlays in the directory
 let
   files = builtins.readDir ./.;
-  overlays = builtins.removeAttrs files [ "default.nix" ];
+  overlays = removeAttrs files [ "default.nix" ];
 in
 builtins.mapAttrs (name: _: import "${./.}/${name}") overlays