Merge pull request dotnet#4674 from Yottster/change-useGlobalMono-scope

Change useGlobalMono scope to default (window)

Author: JoeRobich

package.json

@@ -728,7 +728,6 @@
         "omnisharp.useGlobalMono": {
           "type": "string",
           "default": "auto",
-          "scope": "machine",
           "enum": [
             "auto",
             "always",