test: remove error allowance in debugger test

Remove allowance for FATAL ERROR. It is no longer needed.

Author: MrJithil

test/sequential/test-debugger-exceptions.js

@@ -27,8 +27,7 @@ const path = require('path');
  })
  // Making sure it will die by default:
  .then(() => cli.command('c'))
- // TODO: Remove FATAL ERROR once node doesn't show a FATAL ERROR anymore.
- .then(() => cli.waitFor(/disconnect|FATAL ERROR/))
+ .then(() => cli.waitFor(/disconnect/))
 
  // Next run: With `breakOnException` it pauses in both places.
  .then(() => cli.stepCommand('r'))
@@ -67,7 +66,7 @@ const path = require('path');
  })
  .then(() => cli.command('c'))
  // TODO: Remove FATAL ERROR once node doesn't show a FATAL ERROR anymore
- .then(() => cli.waitFor(/disconnect|FATAL ERROR/))
+ .then(() => cli.waitFor(/disconnect/))
 
  .then(() => cli.quit())
  .then(null, onFatal);