diff --git a/packages/react-native/React/Base/RCTConstants.h b/packages/react-native/React/Base/RCTConstants.h
index c7f677ba455..289e8a09033 100644
--- a/packages/react-native/React/Base/RCTConstants.h
+++ b/packages/react-native/React/Base/RCTConstants.h
@@ -55,12 +55,6 @@ RCT_EXTERN void RCTSetDispatchW3CPointerEvents(BOOL value);
 RCT_EXTERN int RCTGetMemoryPressureUnloadLevel(void);
 RCT_EXTERN void RCTSetMemoryPressureUnloadLevel(int value);
 
-/*
- * Parse JS stack for unhandled JS errors caught in C++
- */
-RCT_EXTERN BOOL RCTGetParseUnhandledJSErrorStackNatively(void);
-RCT_EXTERN void RCTSetParseUnhandledJSErrorStackNatively(BOOL value);
-
 /*
  * Use native view configs in bridgeless mode
  */
diff --git a/packages/react-native/React/Base/RCTConstants.m b/packages/react-native/React/Base/RCTConstants.m
index a93a2a8c669..70e94ca6b65 100644
--- a/packages/react-native/React/Base/RCTConstants.m
+++ b/packages/react-native/React/Base/RCTConstants.m
@@ -52,22 +52,6 @@ void RCTSetMemoryPressureUnloadLevel(int value)
   RCTMemoryPressureUnloadLevel = value;
 }
 
-/*
- * In Bridge mode, parse the JS stack for unhandled JS errors, to display in RedBox.
- * When false (previous default behavior), a native stack is displayed in the RedBox.
- */
-static BOOL RCTParseUnhandledJSErrorStackNatively = NO;
-
-BOOL RCTGetParseUnhandledJSErrorStackNatively(void)
-{
-  return RCTParseUnhandledJSErrorStackNatively;
-}
-
-void RCTSetParseUnhandledJSErrorStackNatively(BOOL value)
-{
-  RCTParseUnhandledJSErrorStackNatively = value;
-}
-
 /*
  * Use native view configs in bridgeless mode
  */