Delete unused code.

PiperOrigin-RevId: 500843662

src/google/protobuf/text_format.cc

@@ -2020,9 +2020,6 @@ class FieldValuePrinterWrapper : public TextFormat::FastFieldValuePrinter {
 
 }  // namespace
 
-const char* const TextFormat::Printer::kDoNotParse =
-    "DO NOT PARSE: fields may be stripped and missing.\n";
-
 TextFormat::Printer::Printer()
     : initial_indent_level_(0),
       single_line_mode_(false),

src/google/protobuf/text_format.h

@@ -450,8 +450,6 @@ class PROTOBUF_EXPORT TextFormat {
     // strings (see text_format.cc for implementation).
     class FastFieldValuePrinterUtf8Escaping;
 
-    static const char* const kDoNotParse;
-
     // Internal Print method, used for writing to the OutputStream via
     // the TextGenerator class.
     void Print(const Message& message, BaseTextGenerator* generator) const;