Package breakurl Warning: You are using breakurl while processing via pdflatex.(breakurl) \burl will be just a synonym of \url. on input line 48

Question

How to remove the following warning?

Package breakurl Warning: You are using breakurl while processing via pdflatex.

(breakurl)                \burl will be just a synonym of \url.
(breakurl)                 on input line 48.

This is my code before the \begin{document}

%\documentclass[review]{elsarticle}
\documentclass[sn-mathphys]{sn-jnl}

\usepackage{lineno}

\usepackage{graphicx}
\usepackage{tabularx}
\usepackage{booktabs}
\usepackage{supertabular}
\usepackage{multirow}
%\usepackage[skip=0.5\baselineskip,skip=0.5\abovecaptionskip]{caption}
\newcolumntype{P}[1]{>{\centering\arraybackslash}p{#1}}

\usepackage{verbatim}
% \usepackage{subfiles}
\hyphenation{presents}
\setlength{\textfloatsep}{3pt}
\date{February 2022}
%%% journal %%%

%%%%%%%%%%%%%%%%%%%%%%%
%% Elsevier bibliography styles
%%%%%%%%%%%%%%%%%%%%%%%
%% To change the style, put a % in front of the second line of the current style and
%% remove the % from the second line of the style you would like to use.
%%%%%%%%%%%%%%%%%%%%%%%

%% Numbered
%\bibliographystyle{model1-num-names}

%% Numbered without titles
%\bibliographystyle{model1a-num-names}

%% Harvard
%\bibliographystyle{model2-names.bst}\biboptions{authoryear}

%% Vancouver numbered
%\usepackage{numcompress}\bibliographystyle{model3-num-names}

%% Vancouver name/year
%\usepackage{numcompress}\bibliographystyle{model4-names}\biboptions{authoryear}

%% APA style
%\bibliographystyle{model5-names}\biboptions{authoryear}

%% AMA style
%\usepackage{numcompress}\bibliographystyle{model6-num-names}

%% `Elsevier LaTeX' style
%\bibliographystyle{elsarticle-num}
%%%%%%%%%%%%%%%%%%%%%%%
\setlength{\textfloatsep}{3pt}
\setlength{\abovedisplayskip}{3pt} %%% 3pt 

\setlength{\belowdisplayskip}{3pt}
\begin{document}

Answer 1

The message about \burl being treated as a synonym for \url is a warning message, not an error message. You needn't doing anything about it -- especially if there are no \burl directives in the body of your document.

If you really can't stand getting this innocuous warning message, I suggest you open the file sn-jnl.cls in a text editor and find the following code chunk:

\gdef\breakurldefns{%
\if@pdflatex\else%
  \RequirePackage[hyphenbreaks]{breakurl}%
  \let\href\burlalt%
\fi}%
\breakurldefns%

Then, either comment out (or delete) this entire chunk or, more simply, its final instruction, viz.,

\breakurldefns%

Answer 2

To suppress the warning load the class with the option pdflatex:

\documentclass[pdflatex]{sn-jnl}
\begin{document}
xxxx

\end{document}