fix(opentelemetry-js): remove deprecated lerna parameter

The parameter `useWorkspaces` was removed on [lerna](lerna/lerna#3695),
and trying to compile (`npm run compile`) or test (`npm test`) fails with the error:

```
lerna ERR! ECONFIGWORKSPACES The "useWorkspaces" option has been removed. By default lerna will resolve your packages using your package manager's workspaces configuration. Alternatively, you can manually provide a list of package globs to be used instead via the "packages" option in lerna.json.
```

Once the attribute is removed, the commands work as expected.

Fixes open-telemetry#4556

lerna.json

@@ -1,5 +1,4 @@
 {
   "version": "independent",
-  "npmClient": "npm",
-  "useWorkspaces": true
+  "npmClient": "npm"
 }