vscode-go: remove the 'references' codelens

The 'references' codelens depends on the guru application,
which is no longer supported.

For #2509

Change-Id: I55b99002c71dc4020d700bbf9263b5810aa1ef72
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/444416
TryBot-Result: kokoro <[email protected]>
Reviewed-by: Jamal Carvalho <[email protected]>
Run-TryBot: Peter Weinberger <[email protected]>

Author: pjweinbgo

docs/settings.md

@@ -208,13 +208,11 @@ Default:
 Feature level setting to enable/disable code lens for references and run/debug tests
 | Properties | Description |
 | --- | --- |
-| `references` | If true, enables the references code lens. Uses guru. Recalculates when there is change to the document followed by scrolling. Unnecessary when using the language server; use the call graph feature instead. <br/> Default: `false` |
 | `runtest` | If true, enables code lens for running and debugging tests <br/> Default: `true` |
 
 Default:
 ```
 {
-	"references" :	false,
 	"runtest" :	true,
 }
 ```

package.json

@@ -1633,11 +1633,6 @@
         "go.enableCodeLens": {
           "type": "object",
           "properties": {
-            "references": {
-              "type": "boolean",
-              "default": false,
-              "description": "If true, enables the references code lens. Uses guru. Recalculates when there is change to the document followed by scrolling. Unnecessary when using the language server; use the call graph feature instead."
-            },
             "runtest": {
               "type": "boolean",
               "default": true,
@@ -1646,7 +1641,6 @@
           },
           "additionalProperties": false,
           "default": {
-            "references": false,
             "runtest": true
           },
           "description": "Feature level setting to enable/disable code lens for references and run/debug tests",