backwards: Remove syncthing, repoint pinwheel folders to manatee

hosts/pinwheel/modules/syncthing/default.nix

@@ -15,7 +15,6 @@
     settings = {
       devices = {
         phone.id = config.lib.syncthing.phone;
-        backwards.id = config.lib.syncthing.backwards;
         manatee.id = config.lib.syncthing.manatee;
       };
 
@@ -24,7 +23,6 @@
           path = "/home/alex/sync/org";
           devices = [
             "phone"
-            "backwards"
             "manatee"
           ];
           versioning = {
@@ -37,7 +35,7 @@
 
         personal = {
           path = "/home/alex/sync/personal";
-          devices = [ "backwards" ];
+          devices = [ "manatee" ];
           versioning = {
             type = "staggered";
             params = {
@@ -48,18 +46,7 @@
 
         work = {
           path = "/home/alex/sync/work";
-          devices = [ "backwards" ];
-          versioning = {
-            type = "staggered";
-            params = {
-              maxAge = "2592000"; # 30 days
-            };
-          };
-        };
-
-        books = {
-          path = "/home/alex/sync/reading-material/books";
-          devices = [ "backwards" ];
+          devices = [ "manatee" ];
           versioning = {
             type = "staggered";
             params = {