Apply fixes from StyleCI

Author: freekmurze

src/Drivers/JsonDriver.php

@@ -3,7 +3,6 @@
 namespace Spatie\Snapshots\Drivers;
 
 use PHPUnit\Framework\Assert;
-use PHPUnit\Framework\Constraint\JsonMatches;
 use Spatie\Snapshots\Driver;
 use Spatie\Snapshots\Exceptions\CantBeSerialized;
 

src/MatchesSnapshots.php

@@ -2,8 +2,8 @@
 
 namespace Spatie\Snapshots;
 
-use PHPUnit_Framework_ExpectationFailedException;
 use PHPUnit\Framework\ExpectationFailedException;
+use PHPUnit_Framework_ExpectationFailedException;
 use ReflectionClass;
 use Spatie\Snapshots\Drivers\JsonDriver;
 use Spatie\Snapshots\Drivers\VarDriver;

tests/Integration/MatchesSnapshotTest.php

@@ -3,7 +3,6 @@
 namespace Spatie\Snapshots\Test\Integration;
 
 use PHPUnit\Framework\TestCase;
-use PHPUnit\Runner\Version;
 use PHPUnit_Framework_MockObject_MockObject;
 use Spatie\Snapshots\MatchesSnapshots;