refactor: remove unused FileOpener2 dependency

package.json

@@ -80,7 +80,6 @@
     "@capacitor/status-bar": "4.0.1",
     "@hugotomazi/capacitor-navigation-bar": "2.0.0",
     "@ionic-native/core": "5.36.0",
-    "@ionic-native/file-opener": "5.36.0",
     "@ionic/angular": "6.2.9",
     "@ionic/storage-angular": "3.0.6",
     "@ngx-translate/core": "14.0.0",
@@ -91,7 +90,6 @@
     "@transistorsoft/capacitor-background-fetch": "1.0.0",
     "capacitor-secure-storage-plugin": "0.8.0",
     "cordova-plugin-calendar": "5.1.6",
-    "cordova-plugin-file-opener2": "3.0.5",
     "deepmerge": "4.2.2",
     "form-data": "4.0.0",
     "geojson": "0.5.0",