[lldb][NFCI] Remove unused method overload of ValueObject::GetChildAtNamePath

lldb/include/lldb/Core/ValueObject.h

public:
 
   lldb::ValueObjectSP
   GetChildAtIndexPath(llvm::ArrayRef<std::pair<size_t, bool>> idxs,
                       size_t *index_of_error = nullptr);
 
   // this will always create the children if necessary
   lldb::ValueObjectSP GetChildAtNamePath(llvm::ArrayRef<llvm::StringRef> names);
 
-  lldb::ValueObjectSP
-  GetChildAtNamePath(llvm::ArrayRef<std::pair<ConstString, bool>> names,
-                     ConstString *name_of_error = nullptr);
-
   virtual lldb::ValueObjectSP GetChildMemberWithName(llvm::StringRef name,
                                                      bool can_create = true);
 
   virtual size_t GetIndexOfChildWithName(llvm::StringRef name);
 
   size_t GetNumChildren(uint32_t max = UINT32_MAX);
 
   const Value &GetValue() const { return m_value; }

lldb/source/Core/ValueObject.cpp

for (llvm::StringRef name : names) {
     root = root->GetChildMemberWithName(name);
     if (!root) {
       return root;
     }
   }
   return root;
 }
 
-lldb::ValueObjectSP ValueObject::GetChildAtNamePath(
-    llvm::ArrayRef<std::pair<ConstString, bool>> names,
-    ConstString *name_of_error) {
-  if (names.size() == 0)
-    return GetSP();
-  ValueObjectSP root(GetSP());
-  for (std::pair<ConstString, bool> name : names) {
-    root = root->GetChildMemberWithName(name.first, name.second);
-    if (!root) {
-      if (name_of_error)
-        *name_of_error = name.first;
-      return root;
-    }
-  }
-  return root;
-}
-
 size_t ValueObject::GetIndexOfChildWithName(llvm::StringRef name) {
   bool omit_empty_base_classes = true;
   return GetCompilerType().GetIndexOfChildWithName(name,
                                                    omit_empty_base_classes);
 }
 
 ValueObjectSP ValueObject::GetChildMemberWithName(llvm::StringRef name,
                                                   bool can_create) {