packages: removed unused @types/slate-react (#44600)

packages/grafana-ui/package.json

@@ -144,7 +144,6 @@
     "@types/react-window": "1.8.5",
     "@types/slate": "0.47.2",
     "@types/slate-plain-serializer": "0.7.2",
-    "@types/slate-react": "0.22.5",
     "@types/testing-library__jest-dom": "5.14.2",
     "@types/testing-library__react-hooks": "^3.2.0",
     "@types/tinycolor2": "1.4.3",

packages/jaeger-ui-components/package.json

@@ -20,7 +20,6 @@
     "@types/react-icons": "2.2.7",
     "@types/recompose": "0.30.10",
     "@types/reselect": "2.2.0",
-    "@types/slate-react": "0.22.5",
     "@types/tinycolor2": "1.4.3",
     "enzyme": "3.11.0",
     "sinon": "12.0.1",