chore: tweak ci for cypress

.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

]

@@ -0,0 +1,32 @@
+chore: tweak ci for cypress
+
+# Please enter the commit message for your changes. Lines starting
+# with '#' will be ignored, and an empty message aborts the commit.
+#
+# Date:      Tue Jan 28 15:09:12 2020 -0600
+#
+# On branch symbol-support
+# Your branch is up to date with 'origin/symbol-support'.
+#
+# Changes to be committed:
+#	modified:   .github/workflows/ci.yml
+#
+# ------------------------ >8 ------------------------
+# Do not modify or remove the line above.
+# Everything below it will be ignored.
+diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
+index 6cad64f..3831a0c 100644
+--- a/.github/workflows/ci.yml
++++ b/.github/workflows/ci.yml
+@@ -9,9 +9,10 @@ jobs:
+       - uses: bahmutov/npm-install@v1
+       - run: yarn ci
+   e2e:
+-    runs-on: ubuntu-latest
++    runs-on: ubuntu-16.04
+     name: cypress
+     steps:
+       - uses: actions/checkout@v1
+       - uses: bahmutov/npm-install@v1
++      - uses: cypress-io/github-action@v1
+       - run: yarn ci-e2e

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';