chore: remove outdated SQL Server sample region tags. (GoogleCloudPlatform#1211)

Author: jsimonweb

cloud_sql/sqlserver/pdo/src/Votes.php

@@ -109,7 +109,6 @@ public function insertVote(string $value): bool
         $conn = $this->connection;
         $res = false;
 
-        # [START cloud_sql_server_pdo_connection]
         # [START cloud_sql_sqlserver_pdo_connection]
         // Use prepared statements to guard against SQL injection.
         $sql = "INSERT INTO votes (time_cast, vote_value) VALUES (GETDATE(), :voteValue)";
@@ -128,7 +127,6 @@ public function insertVote(string $value): bool
             );
         }
         # [END cloud_sql_sqlserver_pdo_connection]
-        # [END cloud_sql_server_pdo_connection]
 
         return $res;
     }

cloud_sql/sqlserver/pdo/src/app.php

@@ -50,7 +50,6 @@
         $dsn = sprintf('sqlsrv:server=%s;Database=%s', $host, $db_name);
 
         // Connect to the database.
-        # [START cloud_sql_server_pdo_timeout]
         # [START cloud_sql_sqlserver_pdo_timeout]
         // Here we set the connection timeout to five seconds and ask PDO to
         // throw an exception if any errors occur.
@@ -59,7 +58,6 @@
             PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
         ]);
         # [END cloud_sql_sqlserver_pdo_timeout]
-        # [END cloud_sql_server_pdo_timeout]
         # [END cloud_sql_sqlserver_pdo_create_tcp]
     } catch (TypeError $e) {
         throw new RuntimeException(