[interop] cxx vector benchmark - reenable it with module deserialization workaround

Author: hyp

benchmark/cxx-source/CxxVectorSum.swift

@@ -16,7 +16,6 @@
 import TestsUtils
 
 public let benchmarks: [BenchmarkInfo] = []
-#if FIX_61472
 
 import std
 
@@ -30,9 +29,6 @@ import CxxStdlibPerformance
 import Cxx
 
 // FIXME: Linux needs fix for https://github.com/apple/swift/issues/61547.
-#if os(Linux)
-public let benchmarks: [BenchmarkInfo] = []
-#else
 public let benchmarks = [
   BenchmarkInfo(
       name: "CxxVecU32.sum.Cxx.rangedForLoop",
@@ -138,5 +134,3 @@ public func run_CxxVectorOfU32_Sum_Swift_Reduce(_ n: Int) {
 extension VectorOfU32.const_iterator : Equatable, UnsafeCxxInputIterator { }
 
 extension VectorOfU32: CxxSequence {}
-#endif
-#endif