Clean up some of the extensions (#8267)

* 💄

* prune unused code

* more cleanup

* remove abunch of used code

extensions/mssql/package.json

@@ -996,7 +996,6 @@
     "error-ex": "^1.3.2",
     "figures": "^2.0.0",
     "find-remove": "1.2.1",
-    "fs-extra": "^3.0.1",
     "kerberos": "^1.1.3",
     "request": "^2.88.0",
     "request-promise": "^4.2.2",
@@ -1004,14 +1003,16 @@
     "stream-meter": "^1.0.4",
     "through2": "^3.0.1",
     "tough-cookie": "^3.0.1",
-    "uri-js": "^4.2.2",
     "vscode-extension-telemetry": "0.1.0",
     "vscode-languageclient": "5.2.1",
     "vscode-nls": "^4.0.0"
   },
   "devDependencies": {
+    "@types/bytes": "^3.0.0",
     "@types/kerberos": "^1.1.0",
     "@types/request": "^2.48.2",
+    "@types/request-promise": "^4.1.44",
+    "@types/stream-meter": "^0.0.22",
     "@types/through2": "^2.0.34"
   }
 }