java/jcalendar: unpin openjdk8

Builds fine with modern JDK.

Approved-by:	no maintainer

java/jcalendar/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	jcalendar
 PORTVERSION=	1.3.3
-PORTREVISION=	3
+PORTREVISION=	4
 CATEGORIES=	java misc
 MASTER_SITES=	http://www.toedter.com/download/
 
@@ -9,7 +9,6 @@ COMMENT=	Java Date Chooser
 WWW=		https://www.toedter.com/en/jcalendar/
 
 USES=		java:ant,run zip
-JAVA_VERSION=	8
 
 WRKSRC=		${WRKDIR}/src
 PLIST_FILES=	%%JAVAJARDIR%%/${PORTNAME}.jar \

java/jcalendar/files/patch-build.xml

@@ -0,0 +1,10 @@
+--- build.xml.orig	2026-04-08 20:26:56 UTC
++++ build.xml
+@@ -73,7 +73,6 @@
+ 		       debug="off"
+ 		       deprecation="on"
+ 		       optimize="on"
+-		       source="1.4"
+ 		/>
+ 	</target>
+