repl: remove unused variable e from try catch

PR-URL: #23449
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Beth Griggs <Bethany.Griggs@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

lib/repl.js

@@ -1485,7 +1485,7 @@ function defineDefaultCommands(repl) {
           this.outputStream.write('Failed to load: ' + file +
                                   ' is not a valid file\n');
         }
-      } catch (e) {
+      } catch {
         this.outputStream.write('Failed to load: ' + file + '\n');
       }
       this.displayPrompt();