Remove webcrypto polyfill, as it's no longer needed

src/App.native.tsx

@@ -5,7 +5,6 @@ import {RootSiblingParent} from 'react-native-root-siblings'
 import {GestureHandlerRootView} from 'react-native-gesture-handler'
 import SplashScreen from 'react-native-splash-screen'
 import {SafeAreaProvider} from 'react-native-safe-area-context'
-import {whenWebCrypto} from './platform/polyfills.native'
 import * as view from './view/index'
 import {RootStoreModel, setupState, RootStoreProvider} from './state'
 import {MobileShell} from './view/shell/mobile'
@@ -17,23 +16,19 @@ function App() {
 
   // init
   useEffect(() => {
-    whenWebCrypto
-      .then(() => {
-        view.setup()
-        return setupState()
-      })
-      .then(store => {
-        setRootStore(store)
-        SplashScreen.hide()
-        Linking.getInitialURL().then((url: string | null) => {
-          if (url) {
-            store.nav.handleLink(url)
-          }
-        })
-        Linking.addEventListener('url', ({url}) => {
+    view.setup()
+    setupState().then(store => {
+      setRootStore(store)
+      SplashScreen.hide()
+      Linking.getInitialURL().then((url: string | null) => {
+        if (url) {
           store.nav.handleLink(url)
-        })
+        }
       })
+      Linking.addEventListener('url', ({url}) => {
+        store.nav.handleLink(url)
+      })
+    })
   }, [])
 
   // show nothing prior to init

src/platform/polyfills.native.ts

@@ -1,30 +1 @@
-import {NativeModules} from 'react-native'
-const {AppSecureRandomModule} = NativeModules
-import {toByteArray} from 'base64-js'
-// @ts-ignore we dont have types for this -prf
-import crypto from '../third-party/msrcrypto'
 import '@zxing/text-encoding' // TextEncoder / TextDecoder
-
-async function generateSecureRandom(bytes: number) {
-  return toByteArray(
-    await AppSecureRandomModule.generateSecureRandomAsBase64(bytes),
-  )
-}
-
-export const whenWebCrypto = new Promise(async (resolve, reject) => {
-  try {
-    const bytes = await generateSecureRandom(48)
-    crypto.initPrng(Array.from(bytes))
-
-    // @ts-ignore global.window exists -prf
-    if (!global.window.crypto) {
-      // @ts-ignore global.window exists -prf
-      global.window.crypto = crypto
-    }
-    resolve(true)
-  } catch (e: any) {
-    reject(e)
-  }
-})
-
-export const webcrypto = crypto