s/makeFuture().via/via/

Summary:
codemod to replace all `makeFuture().via` with just `via`.

Test Plan: contbuild

Reviewed By: jsedgwick@fb.com

Subscribers: trunkagent, zeus-diffs@, targeting-diff-backend@, abirchall, fugalh, msk, exa, benj, njormrod, folly-diffs@

FB internal diff: D1715876

Signature: t1:1715876:1417712302:b882916d394f90caa23bd73fa68b8f786af649e3

folly/wangle/test/FutureTest.cpp

@@ -844,7 +844,7 @@ TEST(Future, viaActsCold) {
   ManualExecutor x;
   size_t count = 0;
 
-  auto fv = makeFuture().via(&x);
+  auto fv = via(&x);
   fv.then([&](Try<void>&&) { count++; });
 
   EXPECT_EQ(0, count);
@@ -857,7 +857,7 @@ TEST(Future, viaActsCold) {
 
 TEST(Future, viaIsCold) {
   ManualExecutor x;
-  EXPECT_FALSE(makeFuture().via(&x).isActive());
+  EXPECT_FALSE(via(&x).isActive());
 }
 
 TEST(Future, viaRaces) {