diff --git a/lldb/include/lldb/Breakpoint/WatchpointResource.h b/lldb/include/lldb/Breakpoint/WatchpointResource.h
index 4b1d733850f1b..070d84cff8f26 100644
--- a/lldb/include/lldb/Breakpoint/WatchpointResource.h
+++ b/lldb/include/lldb/Breakpoint/WatchpointResource.h
@@ -121,14 +121,6 @@ class WatchpointResource
   ///    A copy of the Watchpoints which own this resource.
   WatchpointCollection CopyConstituentsList();
 
-  // The ID of the WatchpointResource is set by the WatchpointResourceList
-  // when the Resource has been set in the inferior and is being added
-  // to the List, in an attempt to match the hardware watchpoint register
-  // ordering.  If a Process can correctly identify the hardware watchpoint
-  // register index when it has created the Resource, it may initialize it
-  // before it is inserted in the WatchpointResourceList.
-  void SetID(lldb::wp_resource_id_t);
-
   lldb::wp_resource_id_t GetID() const;
 
   bool Contains(lldb::addr_t addr);
diff --git a/lldb/source/Breakpoint/WatchpointResource.cpp b/lldb/source/Breakpoint/WatchpointResource.cpp
index d0f8dc346f3c0..c1eb50c0358b3 100644
--- a/lldb/source/Breakpoint/WatchpointResource.cpp
+++ b/lldb/source/Breakpoint/WatchpointResource.cpp
@@ -42,8 +42,6 @@ void WatchpointResource::SetType(bool read, bool write) {
 
 wp_resource_id_t WatchpointResource::GetID() const { return m_id; }
 
-void WatchpointResource::SetID(wp_resource_id_t id) { m_id = id; }
-
 bool WatchpointResource::Contains(addr_t addr) {
   if (addr >= m_addr && addr < m_addr + m_size)
     return true;