RM unneeded config plugin, update primary color (#10153)

plugins/withAndroidDayNightThemePlugin.js

@@ -1,27 +0,0 @@
-// Based on https://github.com/expo/expo/pull/33957
-// Could be removed once the app has been updated to Expo 53
-const {withAndroidStyles} = require('@expo/config-plugins')
-
-module.exports = function withAndroidDayNightThemePlugin(appConfig) {
-  const cleanupList = new Set([
-    'colorPrimary',
-    'android:editTextBackground',
-    'android:textColor',
-    'android:editTextStyle',
-  ])
-
-  return withAndroidStyles(appConfig, config => {
-    config.modResults.resources.style = config.modResults.resources.style
-      ?.map(style => {
-        if (style.$.name === 'AppTheme' && style.item != null) {
-          style.item = style.item.filter(item => !cleanupList.has(item.$.name))
-        }
-        return style
-      })
-      .filter(style => {
-        return style.$.name !== 'ResetEditText'
-      })
-
-    return config
-  })
-}