diff --git a/lldb/bindings/python/python-wrapper.swig b/lldb/bindings/python/python-wrapper.swig
--- a/lldb/bindings/python/python-wrapper.swig
+++ b/lldb/bindings/python/python-wrapper.swig
@@ -567,35 +567,6 @@
     return result.release();
 }
 
-SWIGEXPORT int
-LLDBSwigPython_GetIndexOfChildWithName
-(
-    PyObject *implementor,
-    const char* child_name
-)
-{
-    PyErr_Cleaner py_err_cleaner(true);
-
-    PythonObject self(PyRefType::Borrowed, implementor);
-    auto pfunc = self.ResolveName<PythonCallable>("get_child_index");
-
-    if (!pfunc.IsAllocated())
-        return UINT32_MAX;
-
-    llvm::Expected<PythonObject> result = pfunc.Call(PythonString(child_name));
-
-    long long retval = unwrapOrSetPythonException(As<long long>(std::move(result)));
-
-    if (PyErr_Occurred()) { 
-        PyErr_Clear(); // FIXME print this? do something else
-        return UINT32_MAX;
-    }
-
-    if (retval >= 0)
-        return (uint32_t)retval;
-
-    return UINT32_MAX;
-}
 
 SWIGEXPORT bool
 LLDBSwigPython_UpdateSynthProviderInstance
diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
--- a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
@@ -139,9 +139,6 @@
 extern "C" void *LLDBSwigPython_GetChildAtIndex(void *implementor,
                                                 uint32_t idx);
 
-extern "C" int LLDBSwigPython_GetIndexOfChildWithName(void *implementor,
-                                                      const char *child_name);
-
 extern "C" void *LLDBSWIGPython_CastPyObjectToSBValue(void *data);
 
 extern lldb::ValueObjectSP
@@ -2447,28 +2444,6 @@
   return ret_val;
 }
 
-int ScriptInterpreterPythonImpl::GetIndexOfChildWithName(
-    const StructuredData::ObjectSP &implementor_sp, const char *child_name) {
-  if (!implementor_sp)
-    return UINT32_MAX;
-
-  StructuredData::Generic *generic = implementor_sp->GetAsGeneric();
-  if (!generic)
-    return UINT32_MAX;
-  void *implementor = generic->GetValue();
-  if (!implementor)
-    return UINT32_MAX;
-
-  int ret_val = UINT32_MAX;
-
-  {
-    Locker py_lock(this,
-                   Locker::AcquireLock | Locker::InitSession | Locker::NoSTDIN);
-    ret_val = LLDBSwigPython_GetIndexOfChildWithName(implementor, child_name);
-  }
-
-  return ret_val;
-}
 
 bool ScriptInterpreterPythonImpl::UpdateSynthProviderInstance(
     const StructuredData::ObjectSP &implementor_sp) {
diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h
--- a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h
@@ -146,8 +146,6 @@
   GetChildAtIndex(const StructuredData::ObjectSP &implementor,
                   uint32_t idx) override;
 
-  int GetIndexOfChildWithName(const StructuredData::ObjectSP &implementor,
-                              const char *child_name) override;
 
   bool UpdateSynthProviderInstance(
       const StructuredData::ObjectSP &implementor) override;
diff --git a/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp b/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp
--- a/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp
+++ b/lldb/unittests/ScriptInterpreter/Python/PythonTestSuite.cpp
@@ -147,11 +147,6 @@
   return nullptr;
 }
 
-extern "C" int LLDBSwigPython_GetIndexOfChildWithName(void *implementor,
-                                                      const char *child_name) {
-  return 0;
-}
-
 extern "C" void *LLDBSWIGPython_CastPyObjectToSBValue(void *data) {
   return nullptr;
 }