chore: remove unused catch bindings (#16121)

lib/browser/chrome-extension.js

@@ -226,7 +226,7 @@ const getMessagesPath = (extensionId) => {
     const filename = path.join(localesDirectory, language, 'messages.json')
     fs.accessSync(filename, fs.constants.R_OK)
     return filename
-  } catch (err) {
+  } catch {
     const defaultLocale = metadata.default_locale || 'en'
     return path.join(localesDirectory, defaultLocale, 'messages.json')
   }
@@ -289,7 +289,7 @@ ipcMainUtils.handle('CHROME_STORAGE_WRITE', async function (event, storageType,
 
   try {
     await mkdirp(path.dirname(filePath))
-  } catch (error) {
+  } catch {
     // we just ignore the errors of mkdir or mkdirp
   }
 
@@ -452,14 +452,14 @@ app.on('will-quit', function () {
     if (loadedDevToolsExtensions.length > 0) {
       try {
         fs.mkdirSync(path.dirname(loadedDevToolsExtensionsPath))
-      } catch (error) {
+      } catch {
         // Ignore error
       }
       fs.writeFileSync(loadedDevToolsExtensionsPath, JSON.stringify(loadedDevToolsExtensions))
     } else {
       fs.unlinkSync(loadedDevToolsExtensionsPath)
     }
-  } catch (error) {
+  } catch {
     // Ignore error
   }
 })