update_engine: remove temporary estimation

Remove temporary estimation solution. With the updated estimation logic,
we should be able to accurately estimate the cow size

Bug: 322279333
Test: th
Change-Id: I5c7da1fc1b8b47c940413ff9df1bc17f75c15cd4
diff --git a/payload_generator/cow_size_estimator.cc b/payload_generator/cow_size_estimator.cc
index eb84d45..4be7ea2 100644
--- a/payload_generator/cow_size_estimator.cc
+++ b/payload_generator/cow_size_estimator.cc
@@ -203,9 +203,6 @@
       .compression = std::move(compression),
       .max_blocks = (partition_size / block_size),
       .compression_factor = compression_factor};
-  // b/322279333 use 4096 as estimation until we have an updated estimation
-  // algorithm
-  options.compression_factor = block_size;
   auto cow_writer = CreateCowEstimator(cow_version, options);
   CHECK_NE(cow_writer, nullptr) << "Could not create cow estimator";
   CHECK(CowDryRun(source_fd,