[turbofan] Renamed tracing flags for TurboFan reducers and graph trimmer

src/compiler/graph-trimmer.cc

Index: src/compiler/graph-trimmer.cc
diff --git a/src/compiler/graph-trimmer.cc b/src/compiler/graph-trimmer.cc
index 75071c68b3b5cf1163822edad9aa5f7ca9babaa5..cd1f793cee0dd975cdc2b3730a590accee51a431 100644
--- a/src/compiler/graph-trimmer.cc
+++ b/src/compiler/graph-trimmer.cc
@@ -33,7 +33,7 @@ void GraphTrimmer::TrimGraph() {
     for (Edge edge : live->use_edges()) {
       Node* const user = edge.from();
       if (!IsLive(user)) {
-        if (FLAG_trace_turbo_reduction) {
+        if (FLAG_trace_turbo_trimmer) {
           OFStream os(stdout);
           os << "DeadLink: " << *user << "(" << edge.index() << ") -> " << *live
              << std::endl;