[heap] Retire the twin brother of CollectGarbage.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 1e4b030e83ad681125b4fccae1bac9eae54a7c94..c537beb2cb32c9741d958ba89b7f0668c102dfdb 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -1140,7 +1140,7 @@ class Heap {
   // Performs garbage collection operation.
   // Returns whether there is a chance that another major GC could
   // collect more garbage.
-  inline bool CollectGarbage(
+  bool CollectGarbage(
       AllocationSpace space, GarbageCollectionReason gc_reason,
       const GCCallbackFlags gc_callback_flags = kNoGCCallbackFlags);
 
@@ -1700,14 +1700,6 @@ class Heap {
   // over all objects.  May cause a GC.
   void MakeHeapIterable();
 
-  // Performs garbage collection operation.
-  // Returns whether there is a chance that another major GC could
-  // collect more garbage.
-  bool CollectGarbage(
-      GarbageCollector collector, GarbageCollectionReason gc_reason,
-      const char* collector_reason,
-      const GCCallbackFlags gc_callback_flags = kNoGCCallbackFlags);
-
   // Performs garbage collection
   // Returns whether there is a chance another major GC could
   // collect more garbage.