assert: remove dead code

PR-URL: #58760
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Ethan Arrowood <ethan@arrowood.dev>

Author: kt3k

lib/internal/assert/utils.js

@@ -9,7 +9,6 @@ const {
  SafeMap,
  StringPrototypeCharCodeAt,
  StringPrototypeIncludes,
- StringPrototypeIndexOf,
  StringPrototypeReplace,
  StringPrototypeSlice,
  StringPrototypeSplit,
@@ -174,7 +173,6 @@ function getErrMessage(message, fn) {
 constline=call.getLineNumber()-1;
 letcolumn=call.getColumnNumber()-1;
 letidentifier;
-letcode;
 
 if(filename){
 identifier=`${filename}${line}${column}`;
@@ -199,31 +197,24 @@ function getErrMessage(message, fn) {
 // errors are handled faster.
 if(errorStackTraceLimitIsWritable)Error.stackTraceLimit=0;
 
-if(filename){
-if(decoder===undefined){
-const{ StringDecoder }=require('string_decoder');
-decoder=newStringDecoder('utf8');
-}
-
-// ESM file prop is a file proto. Convert that to path.
-// This ensure opensync will not throw ENOENT for ESM files.
-constfileProtoPrefix='file://';
-if(StringPrototypeStartsWith(filename,fileProtoPrefix)){
-filename=fileURLToPath(filename);
-}
+if(decoder===undefined){
+const{ StringDecoder }=require('string_decoder');
+decoder=newStringDecoder('utf8');
+}
 
-fd=openSync(filename,'r',0o666);
-// Reset column and message.
-({0: column,1: message}=getCode(fd,line,column));
-// Flush unfinished multi byte characters.
-decoder.end();
-}else{
-for(leti=0;i<line;i++){
-code=StringPrototypeSlice(code,
-StringPrototypeIndexOf(code,'\n')+1);
-}
-({0: column,1: message}=parseCode(code,column));
+// ESM file prop is a file proto. Convert that to path.
+// This ensure opensync will not throw ENOENT for ESM files.
+constfileProtoPrefix='file://';
+if(StringPrototypeStartsWith(filename,fileProtoPrefix)){
+filename=fileURLToPath(filename);
 }
+
+fd=openSync(filename,'r',0o666);
+// Reset column and message.
+({0: column,1: message}=getCode(fd,line,column));
+// Flush unfinished multi byte characters.
+decoder.end();
+
 // Always normalize indentation, otherwise the message could look weird.
 if(StringPrototypeIncludes(message,'\n')){
 if(EOL==='\r\n'){