Remove @polkadot/ts dep (#568)

* Remove @polkadot/ts dep

* Bump dev

* Adjust, correct deps

package.json

@@ -34,8 +34,7 @@
   "devDependencies": {
     "@babel/core": "^7.16.5",
     "@babel/runtime": "^7.16.5",
-    "@polkadot/dev": "^0.64.15",
-    "@polkadot/ts": "^0.4.22",
+    "@polkadot/dev": "^0.64.20",
     "@polkadot/x-bundle": "^8.2.2",
     "@types/jest": "^27.0.3",
     "babel-loader": "^8.2.3",