8260586: Shenandoah: simplify "Concurrent Weak References" logging

Reviewed-by: rkennke, zgu
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp b/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
index 480df32..a98519a 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahConcurrentGC.cpp
@@ -622,9 +622,8 @@
   ShenandoahHeap* const heap = ShenandoahHeap::heap();
   assert(heap->is_concurrent_weak_root_in_progress(), "Only during this phase");
   // Concurrent weak refs processing
-  ShenandoahTimingsTracker t(ShenandoahPhaseTimings::conc_weak_refs_work);
-  ShenandoahGCWorkerPhase worker_phase(ShenandoahPhaseTimings::conc_weak_refs_work);
-  heap->ref_processor()->process_references(ShenandoahPhaseTimings::conc_weak_refs_work, heap->workers(), true /* concurrent */);
+  ShenandoahGCWorkerPhase worker_phase(ShenandoahPhaseTimings::conc_weak_refs);
+  heap->ref_processor()->process_references(ShenandoahPhaseTimings::conc_weak_refs, heap->workers(), true /* concurrent */);
 }
 
 class ShenandoahEvacUpdateCleanupOopStorageRootsClosure : public BasicOopIterateClosure {
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.cpp b/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.cpp
index 35f1e14..6618559 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.cpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.cpp
@@ -115,7 +115,7 @@
     case conc_mark_roots:
     case conc_thread_roots:
     case conc_weak_roots_work:
-    case conc_weak_refs_work:
+    case conc_weak_refs:
     case conc_strong_roots:
       return true;
     default:
diff --git a/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.hpp b/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.hpp
index 091e20f..e2cc857 100644
--- a/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.hpp
+++ b/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.hpp
@@ -76,8 +76,7 @@
   f(conc_thread_roots,                              "Concurrent Thread Roots")         \
   SHENANDOAH_PAR_PHASE_DO(conc_thread_roots_,       "  CTR: ", f)                      \
   f(conc_weak_refs,                                 "Concurrent Weak References")      \
-  f(conc_weak_refs_work,                            "  Process")                       \
-  SHENANDOAH_PAR_PHASE_DO(conc_weak_refs_work_,     "    CWRF: ", f)                   \
+  SHENANDOAH_PAR_PHASE_DO(conc_weak_refs_,          "  CWRF: ", f)                     \
   f(conc_weak_roots,                                "Concurrent Weak Roots")           \
   f(conc_weak_roots_work,                           "  Roots")                         \
   SHENANDOAH_PAR_PHASE_DO(conc_weak_roots_work_,    "    CWR: ", f)                    \