chore: Remove obsolete deleteLastPatchedApp call

Author: Ushie

lib/services/manager_api.dart

@@ -378,7 +378,6 @@ class ManagerAPI {
     PatchedApplication app,
     File outFile
   ) async {
-    deleteLastPatchedApp();
     final Directory appCache = await getApplicationSupportDirectory();
     app.patchedFilePath =
         outFile.copySync('${appCache.path}/lastPatchedApp.apk').path;