terraform-providers: remove providers with unclear licensing

https://api.github.com/repos/logicmonitor/terraform-provider-logicmonitor/license
https://api.github.com/repos/vmware/terraform-provider-nsxt/license
https://api.github.com/repos/ondrejsika/terraform-provider-vercel/license

pkgs/applications/networking/cluster/terraform-providers/default.nix

···
   removed-providers =
     let
       archived = name: date: throw "the ${name} terraform provider has been archived by upstream on ${date}";
+      license = name: date: throw "the ${name} terraform provider removed from nixpkgs on ${date} because of unclear licensing";
       removed = name: date: throw "the ${name} terraform provider removed from nixpkgs on ${date}";
     in
     lib.optionalAttrs config.allowAliases {
       b2 = removed "b2" "2022/06";
       checkpoint = removed "checkpoint" "2022/11";
       dome9 = removed "dome9" "2022/08";
+      logicmonitor = license "logicmonitor" "2022/11";
       ncloud = removed "ncloud" "2022/08";
+      nsxt = license "nsxt" "2022/11";
       opc = archived "opc" "2022/05";
       oraclepaas = archived "oraclepaas" "2022/05";
       panos = removed "panos" "2022/05";
       template = archived "template" "2022/05";
+      vercel = license "vercel" "2022/11";
     };
 
   # excluding aliases, used by terraform-full

pkgs/applications/networking/cluster/terraform-providers/providers.json

···
     "spdx": "MPL-2.0",
     "vendorHash": "sha256-5rqn9/NE7Q0VI6SRd2VFKJl4npz9Y0Qp1pEpfj9KxrQ="
   },
-  "logicmonitor": {
-    "hash": "sha256-GQPTFf+JxJB3iO1Us0zOAAG2NonuJ/b5la6f1j2Nd4k=",
-    "homepage": "https://registry.terraform.io/providers/logicmonitor/logicmonitor",
-    "owner": "logicmonitor",
-    "repo": "terraform-provider-logicmonitor",
-    "rev": "v2.0.3",
-    "spdx": null,
-    "vendorHash": null
-  },
   "lxd": {
     "hash": "sha256-DfRhPRclg/hCmmp0V087hl66WSFbEyXHFUGeehlU290=",
     "homepage": "https://registry.terraform.io/providers/terraform-lxd/lxd",
···
     "rev": "v1.13.0",
     "spdx": "MPL-2.0",
     "vendorHash": "sha256-6ePPxdULuTzLdVzzr12BjLu/lBN+5yIUq8U8FVUw/PM="
-  },
-  "nsxt": {
-    "hash": "sha256-TOoRtCKdR1fBjk39dbMgBd7pDJGfjvkQAqfpJzWRwRg=",
-    "homepage": "https://registry.terraform.io/providers/vmware/nsxt",
-    "owner": "vmware",
-    "repo": "terraform-provider-nsxt",
-    "rev": "v3.2.9",
-    "spdx": "NOASSERTION",
-    "vendorHash": null
   },
   "null": {
     "hash": "sha256-ExXDbAXMVCTZBlYmi4kD/7JFB1fCFAoPL637+1N6rEI=",
···
     "rev": "v0.16.1",
     "spdx": "MPL-2.0",
     "vendorHash": "sha256-smeySV1kReZyF9bRCunEr89IV219f9845wcHHI1zFz8="
-  },
-  "vercel": {
-    "hash": "sha256-/LHyNxal5Il/UzXdCKfVRzK/VVfSYMgoeKerWsedmho=",
-    "homepage": "https://registry.terraform.io/providers/ondrejsika/vercel",
-    "owner": "ondrejsika",
-    "repo": "terraform-provider-vercel",
-    "rev": "v2.1.0",
-    "spdx": null,
-    "vendorHash": "sha256-EyzYlJV+DoOjFHq7ZkyZY0zHlvciH1YdTPgEIXZwE2g="
   },
   "vpsadmin": {
     "hash": "sha256-MFEerVGKros+9zubcjK8qUpYQveKuBgbfyai32Y0KLI=",