delete all the zfs code

- that's two weeks work that never got used for anything.  it was pretty
  cool too and complicated/powerful.  Deleted!

Author: williamstein

src/packages/file-server/storage-btrfs/filesystem.ts renamed to src/packages/file-server/btrfs/filesystem.ts

@@ -12,14 +12,7 @@ a = require('@cocalc/file-server/storage-btrfs'); fs = await a.filesystem({devic
 */
 
 import refCache from "@cocalc/util/refcache";
-import {
-  exists,
-  isdir,
-  listdir,
-  mkdirp,
-  rmdir,
-  sudo,
-} from "@cocalc/file-server/storage-zfs/util";
+import { exists, isdir, listdir, mkdirp, rmdir, sudo } from "./util";
 import { subvolume, SNAPSHOTS, type Subvolume } from "./subvolume";
 import { join, normalize } from "path";
 

src/packages/file-server/storage-btrfs/index.ts renamed to src/packages/file-server/btrfs/index.ts

@@ -9,7 +9,7 @@ import {
   listdir,
   mkdirp,
   sudo,
-} from "@cocalc/file-server/storage-zfs/util";
+} from "./util";
 import { join } from "path";
 import { updateRollingSnapshots, type SnapshotCounts } from "./snapshots";
 import { human_readable_size } from "@cocalc/util/misc";

src/packages/file-server/storage-btrfs/snapshots.ts renamed to src/packages/file-server/btrfs/snapshots.ts

@@ -1,7 +1,7 @@
 import {
   filesystem,
   type Filesystem,
-} from "@cocalc/file-server/storage-btrfs/filesystem";
+} from "@cocalc/file-server/btrfs/filesystem";
 import process from "node:process";
 import { chmod, mkdtemp, mkdir, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";

src/packages/file-server/storage-btrfs/subvolume.ts renamed to src/packages/file-server/btrfs/subvolume.ts

@@ -3,19 +3,16 @@
   "version": "1.0.0",
   "description": "CoCalc File Server",
   "exports": {
-    "./zfs": "./dist/zfs/index.js",
-    "./zfs/*": "./dist/zfs/*.js",
-    "./storage-zfs": "./dist/storage-zfs/index.js",
-    "./storage-zfs/*": "./dist/storage-zfs/*.js",
-    "./storage-btrfs": "./dist/storage-btrfs/index.js",
-    "./storage-btrfs/*": "./dist/storage-btrfs/*.js"
+    "./btrfs": "./dist/btrfs/index.js",
+    "./btrfs/*": "./dist/btrfs/*.js"
   },
   "scripts": {
     "preinstall": "npx only-allow pnpm",
     "build": "pnpm exec tsc --build",
     "tsc": "pnpm exec tsc  --watch  --pretty --preserveWatchOutput",
     "test": "pnpm exec jest  --runInBand",
-    "depcheck": "pnpx depcheck"
+    "depcheck": "pnpx depcheck",
+    "clean": "rm -rf node_modules dist"
   },
   "files": [
     "dist/**",
@@ -26,24 +23,17 @@
   "keywords": [
     "utilities",
     "btrfs",
-    "zfs",
     "cocalc"
   ],
   "license": "SEE LICENSE.md",
   "dependencies": {
     "@cocalc/backend": "workspace:*",
-    "@cocalc/conat": "workspace:*",
     "@cocalc/file-server": "workspace:*",
-    "@cocalc/util": "workspace:*",
-    "@types/jest": "^29.5.14",
-    "@types/node": "^18.16.14",
-    "awaiting": "^3.0.0",
-    "better-sqlite3": "^11.10.0",
-    "lodash": "^4.17.21"
+    "@cocalc/util": "workspace:*"
   },
   "devDependencies": {
-    "@types/better-sqlite3": "^7.6.13",
-    "@types/lodash": "^4.14.202"
+    "@types/jest": "^29.5.14",
+    "@types/node": "^18.16.14"
   },
   "repository": {
     "type": "git",