Remove unused library. Update camera

Author: flekschas

package-lock.json

@@ -29,10 +29,9 @@
     "watch": "rollup -cw"
   },
   "dependencies": {
-    "@flekschas/dom-2d-camera": "~1.0.0-rc.2",
-    "camera-2d-simple": "~2.0.0",
+    "@flekschas/dom-2d-camera": "~1.0.0-rc.3",
+    "camera-2d-simple": "~2.0.1",
     "gl-matrix": "~3.1.0",
-    "is-key-down": "~0.1.0",
     "kdbush": "~3.0.0",
     "lodash-es": "~4.17.11",
     "pub-sub-es": "~1.2.1",