chore(logging): remove obsolete region tags (GoogleCloudPlatform#1736)

Author: meredithslota

appengine/flexible/logging/app.php

@@ -16,9 +16,7 @@
  */
 
 # [START logging_creating_psr3_logger_import]
-# [START creating_psr3_logger_import]
 use Google\Cloud\Logging\LoggingClient;
-# [END creating_psr3_logger_import]
 # [END logging_creating_psr3_logger_import]
 use Psr\Http\Message\ServerRequestInterface as Request;
 use Psr\Http\Message\ResponseInterface as Response;
@@ -61,12 +59,10 @@
     parse_str((string) $request->getBody(), $postData);
     # [START gae_flex_configure_logging]
     # [START logging_creating_psr3_logger]
-    # [START creating_psr3_logger]
     $logging = new LoggingClient([
         'projectId' => $projectId
     ]);
     $logger = $logging->psrLogger('app');
-    # [END creating_psr3_logger]
     # [END logging_creating_psr3_logger]
     $logger->notice($postData['text'] ?? '');
     # [END gae_flex_configure_logging]
@@ -78,15 +74,11 @@
 $app->get('/async_log', function (Request $request, Response $response) use ($projectId) {
     $token = $request->getUri()->getQuery('token');
     # [START logging_enabling_psr3_batch]
-    # [START enabling_batch]
     $logger = LoggingClient::psrBatchLogger('app');
-    # [END enabling_batch]
     # [END logging_enabling_psr3_batch]
     # [START logging_using_psr3_logger]
-    # [START using_the_logger]
     $logger->info('Hello World');
     $logger->error('Oh no');
-    # [END using_the_logger]
     # [END logging_using_psr3_logger]
     $logger->info("Token: $token");
     $response->getBody()->write('Sent some logs');