Remove array style checkstyle suppression

Remove the array style rules suppression since it doesn't cause any
checkstyle violations.

Issue gh-8945

etc/checkstyle/checkstyle-suppressions.xml

@@ -3,7 +3,6 @@
 		"-//Checkstyle//DTD SuppressionFilter Configuration 1.2//EN"
 		"https://checkstyle.org/dtds/suppressions_1_2.dtd">
 <suppressions>
-	<suppress files=".*" checks="ArrayTypeStyle" />
 	<suppress files=".*" checks="AtclauseOrder" />
 	<suppress files=".*" checks="AvoidStarImport" />
 	<suppress files=".*" checks="EmptyBlock" />