message: [Gardening] Remove dead code from ASTDumper (NFC)
  These functions are not referenced.
diff: @@ -75,8 +75,6 @@ ASTDumper::ASTDumper(const CompilerType &compiler_type) {
  const char *ASTDumper::GetCString() { return m_dump.c_str(); }
  -void ASTDumper::ToSTDERR() { fprintf(stderr, "%s\n", m_dump.c_str()); }
  -
  void ASTDumper::ToLog(Log *log, const char *prefix) {
  size_t len = m_dump.length() + 1;
  @@ -104,5 +102,3 @@ void ASTDumper::ToLog(Log *log, const char *prefix) {
  free(alloc);
  }
  -
  -void ASTDumper::ToStream(lldb::StreamSP &stream) { stream->PutCString(m_dump); }
  