Revert "Update CallToStaticMethodStatementWithoutSideEffectsRuleTest.php"

This reverts commit cf3c807.

Author: staabm

tests/PHPStan/Rules/Methods/CallToStaticMethodStatementWithoutSideEffectsRuleTest.php

@@ -42,10 +42,6 @@ public function testRulePhp7(): void
 				'Call to static method DateTimeImmutable::createFromFormat() on a separate line has no effect.',
 				12,
 			],
-			[
-				'Call to static method DateTimeImmutable::createFromFormat() on a separate line has no effect.',
-				13,
-			],
 			[
 				'Call to method DateTime::format() on a separate line has no effect.',
 				23,