chore(nvim): drop 'nvimkit-nvim' plugin

flake.lock

@@ -552,7 +552,6 @@
         ],
         "plugins-atlas-nvim": "plugins-atlas-nvim",
         "plugins-beancount-nvim": "plugins-beancount-nvim",
-        "plugins-nvimkit-nvim": "plugins-nvimkit-nvim",
         "plugins-shipwright-nvim": "plugins-shipwright-nvim",
         "plugins-tailwind-fold-nvim": "plugins-tailwind-fold-nvim"
       },
@@ -598,22 +597,6 @@
         "type": "github"
       }
     },
-    "plugins-nvimkit-nvim": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1721393835,
-        "narHash": "sha256-MdmrhLHMxrn6upu1chjKyitPZ5WkCQtpI465AKJXDOA=",
-        "owner": "jamesblckwell",
-        "repo": "nvimkit.nvim",
-        "rev": "af363d22699760f66988e8d36539a5753039217a",
-        "type": "github"
-      },
-      "original": {
-        "owner": "jamesblckwell",
-        "repo": "nvimkit.nvim",
-        "type": "github"
-      }
-    },
     "plugins-shipwright-nvim": {
       "flake": false,
       "locked": {