x11/plasma5-plasma-workspace: remove obsolete www/kf5-kjsembed dependency

This requirement was dropped three years ago upstream in [1] but was
missed in the ports tree.

[1] https://invent.kde.org/plasma/plasma-workspace/-/commit/6543190a87f745d841c64ef6c6d63b27a18386f4

Reported by:	Rafael Sadowski <rafael@sizeofvoid.org>

x11/plasma5-plasma-workspace/Makefile

 PORTNAME=	plasma-workspace
 DISTVERSION=	${KDE_PLASMA_VERSION}
+PORTREVISION=	1
 CATEGORIES=	x11 kde kde-plasma
 
 MAINTAINER=	kde@FreeBSD.org
@@ -35,7 +36,7 @@ USE_KDE=	activities activities-stats activitymanagerd archive attica \
 		auth baloo bookmarks codecs completion config configwidgets \
 		coreaddons crash dbusaddons emoticons filemetadata globalaccel \
 		guiaddons holidays i18n iconthemes idletime init itemmodels \
-		itemviews jobwidgets js jsembed kcmutils kdeclarative kdesu \
+		itemviews jobwidgets js kcmutils kdeclarative kdesu \
 		kdewebkit kio kscreenlocker kwin libkscreen libksysguard \
 		newstuff notifications notifyconfig package parts people \
 		plasma-framework plasma-integration prison pty runner service \