Remove deprecated methods from event-related classes

UPGRADE.md

 # Upgrade to 3.0
 
+## BC BREAK: Changes in the `Doctrine\DBAL\Event` API
+
+- `ConnectionEventArgs::getDriver()`, `::getDatabasePlatform()` and `::getSchemaManager()` methods have been removed. The connection information can be obtained from the connection which is available via `::getConnection()`.
+- `SchemaColumnDefinitionEventArgs::getDatabasePlatform()` and `SchemaIndexDefinitionEventArgs::getDatabasePlatform()` have been removed for the same reason as above.
+
 ## BC BREAK: Changes in obtaining the currently selected database name
 
 - The `Doctrine\DBAL\Driver::getDatabase()` method has been removed. Please use `Doctrine\DBAL\Connection::getDatabase()` instead.

src/Event/ConnectionEventArgs.php

@@ -4,9 +4,6 @@ namespace Doctrine\DBAL\Event;
 
 use Doctrine\Common\EventArgs;
 use Doctrine\DBAL\Connection;
-use Doctrine\DBAL\Driver;
-use Doctrine\DBAL\Platforms\AbstractPlatform;
-use Doctrine\DBAL\Schema\AbstractSchemaManager;
 
 /**
  * Event Arguments used when a Driver connection is established inside Doctrine\DBAL\Connection.
@@ -28,34 +25,4 @@ class ConnectionEventArgs extends EventArgs
     {
         return $this->connection;
     }
-
-    /**
-     * @deprecated Use ConnectionEventArgs::getConnection() and Connection::getDriver() instead.
-     *
-     * @return Driver
-     */
-    public function getDriver()
-    {
-        return $this->connection->getDriver();
-    }
-
-    /**
-     * @deprecated Use ConnectionEventArgs::getConnection() and Connection::getDatabasePlatform() instead.
-     *
-     * @return AbstractPlatform
-     */
-    public function getDatabasePlatform()
-    {
-        return $this->connection->getDatabasePlatform();
-    }
-
-    /**
-     * @deprecated Use ConnectionEventArgs::getConnection() and Connection::getSchemaManager() instead.
-     *
-     * @return AbstractSchemaManager
-     */
-    public function getSchemaManager()
-    {
-        return $this->connection->getSchemaManager();
-    }
 }

src/Event/SchemaColumnDefinitionEventArgs.php

@@ -3,7 +3,6 @@
 namespace Doctrine\DBAL\Event;
 
 use Doctrine\DBAL\Connection;
-use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\Column;
 
 /**
@@ -95,14 +94,4 @@ class SchemaColumnDefinitionEventArgs extends SchemaEventArgs
     {
         return $this->connection;
     }
-
-    /**
-     * @deprecated Use SchemaColumnDefinitionEventArgs::getConnection() and Connection::getDatabasePlatform() instead.
-     *
-     * @return AbstractPlatform
-     */
-    public function getDatabasePlatform()
-    {
-        return $this->connection->getDatabasePlatform();
-    }
 }

src/Event/SchemaIndexDefinitionEventArgs.php

@@ -3,7 +3,6 @@
 namespace Doctrine\DBAL\Event;
 
 use Doctrine\DBAL\Connection;
-use Doctrine\DBAL\Platforms\AbstractPlatform;
 use Doctrine\DBAL\Schema\Index;
 
 /**
@@ -81,12 +80,4 @@ class SchemaIndexDefinitionEventArgs extends SchemaEventArgs
     {
         return $this->connection;
     }
-
-    /**
-     * @return AbstractPlatform
-     */
-    public function getDatabasePlatform()
-    {
-        return $this->connection->getDatabasePlatform();
-    }
 }