test: remove obsolete debugger pre-break handling

Signed-off-by: inoway46 <inoueyuya416@gmail.com>

Author: inoway46

test/common/debugger.js

@@ -14,10 +14,6 @@ if (common.isWindows || common.isMacOS) {
   TIMEOUT = common.platformTimeout(15000);
 }
 
-function isPreBreak(output) {
-  return /Break on start/.test(output) && /1 \(function \(exports/.test(output);
-}
-
 function startCLI(args, flags = [], spawnOpts = {}, opts = { randomPort: true }) {
   let stderrOutput = '';
   const child = spawn(process.execPath, [
@@ -114,11 +110,6 @@ function startCLI(args, flags = [], spawnOpts = {}, opts = { randomPort: true })
 
     async waitForInitialBreak() {
       await this.waitFor(/break (?:on start )?in/i);
-
-      if (isPreBreak(this.output)) {
-        await this.command('next', false);
-        return this.waitFor(/break in/);
-      }
     },
 
     get breakInfo() {

test/parallel/test-debugger-break.js

@@ -22,7 +22,7 @@ const cli = startCLI([script]);
   );
   assert.match(
     cli.output,
-    /> 1 (?:\(function \([^)]+\) \{ )?const x = 10;/,
+    /> 1 const x = 10;/,
     'shows the source and marks the current line');
 
   await cli.stepCommand('n');