add license

package.json

@@ -2,6 +2,7 @@
   "name": "subtracks",
   "version": "1.0.0",
   "private": true,
+  "license": "GPL-3.0-only",
   "scripts": {
     "android": "react-native run-android",
     "start": "react-native start",
@@ -17,7 +18,6 @@
     "@react-navigation/bottom-tabs": "^5.11.11",
     "@react-navigation/material-top-tabs": "^5.3.15",
     "@react-navigation/native": "^5.9.4",
-    "fast-deep-equal": "^3.1.3",
     "immer": "^9.0.5",
     "lodash.debounce": "^4.0.8",
     "md5": "^2.3.0",