chore: tweak ci for cypress

Author: acao

.github/workflows/ci.yml

@@ -2,13 +2,14 @@ name: Node.JS CI
 on: [push]
 jobs:
   test:
-    runs-on: ubuntu-latest
     name: lint & test
+    runs-on: ubuntu-16.04
     steps:
       - uses: actions/checkout@v1
       - uses: bahmutov/npm-install@v1
       - run: yarn ci
   e2e:
+    name: cypress
     runs-on: ubuntu-16.04
     steps:
       - uses: actions/checkout@v1

package.json

@@ -108,7 +108,7 @@
     "mkdirp": "^1.0.3",
     "mocha": "7.0.1",
     "prettier": "^1.18.2",
-    "rimraf": "^3.0.1",
+    "rimraf": "^3.0.2",
     "ts-jest": "^25.2.0",
     "typedoc": "^0.15.6",
     "typescript": "^3.6.3"

packages/graphql-language-service-interface/src/GraphQLLanguageService.ts

@@ -11,7 +11,6 @@ import {
   DocumentNode,
   FragmentSpreadNode,
   FragmentDefinitionNode,
-  OperationDefinitionNode,
   TypeDefinitionNode,
   NamedTypeNode,
   ValidationRule,
@@ -33,7 +32,6 @@ import {
 // import { Position } from 'graphql-language-service-utils';
 import {
   Hover,
-  DiagnosticSeverity,
   SymbolInformation,
   SymbolKind,
 } from 'vscode-languageserver-types';