Always lock incrementally.

This change was requested in #1534 but I think fell through the cracks.

Author: 3405691582

base/cvd/cuttlefish/host/commands/cvd/cli/selector/creation_analyzer.cpp

@@ -149,13 +149,10 @@ CreationAnalyzer::AnalyzeInstanceIdsInternal(bool acquire_file_locks) {
             "For now, cvd server always acquire the file locks "
                 << "when IDs are automatically allocated.");
 
-  const auto incremental = selector_options_parser_.UseCvdalloc();
   // As this test was done earlier, this line must not fail
   const auto n_instances = selector_options_parser_.RequestedNumInstances();
   auto acquired_all_file_locks =
-      incremental ? CF_EXPECT(instance_lock_file_manager_.AcquireUnusedLocks(
-                        n_instances))
-                  : CF_EXPECT(instance_lock_file_manager_.LockAllAvailable());
+      CF_EXPECT(instance_lock_file_manager_.AcquireUnusedLocks(n_instances));
   auto id_to_lockfile_map =
       ConstructIdLockFileMap(std::move(acquired_all_file_locks));