Remove unused exception classes

src/Collection.php

@@ -11,7 +11,6 @@ use MongoDB\Driver\Server;
 use MongoDB\Driver\WriteConcern;
 use MongoDB\Exception\InvalidArgumentException;
 use MongoDB\Exception\InvalidArgumentTypeException;
-use MongoDB\Exception\UnexpectedTypeException;
 use MongoDB\Model\IndexInfoIterator;
 use MongoDB\Model\IndexInput;
 use MongoDB\Operation\Aggregate;

src/Exception/UnexpectedTypeException.php

-<?php
-
-namespace MongoDB\Exception;
-
-class UnexpectedTypeException extends InvalidArgumentException
-{
-    public function __construct($value, $expectedType)
-    {
-        parent::__construct(sprintf('Expected argument of type "%s", "%s" given', $expectedType, is_object($value) ? get_class($value) : gettype($value)));
-    }
-}

src/Exception/UnexpectedValueTypeException.php

-<?php
-
-namespace MongoDB\Exception;
-
-class UnexpectedValueTypeException extends UnexpectedValueException
-{
-    public function __construct($name, $value, $expectedType)
-    {
-        parent::__construct(sprintf('Expected %s to have type "%s" but found "%s"', $name, $expectedType, is_object($value) ? get_class($value) : gettype($value)));
-    }
-}