Remove obsolete checkstyle module.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/collections/trunk@1715701 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/conf/checkstyle.xml b/src/conf/checkstyle.xml
index 1aee7f6..df0841f 100644
--- a/src/conf/checkstyle.xml
+++ b/src/conf/checkstyle.xml
@@ -38,9 +38,6 @@
 		<module name="RedundantImport" />
 		<module name="UnusedImports" />
 		<module name="NeedBraces" />
-		<module name="RedundantThrows">
-			<property name="allowUnchecked" value="true" />
-		</module>
 		<module name="LineLength">
 			<property name="max" value="120" />
 		</module>