kde-plasma/plasma-welcome: Do not enable IUSE kaccounts by default

KDE-bug: https://bugs.kde.org/show_bug.cgi?id=471380

See also:
https://discuss.kde.org/t/why-does-every-kde-pim-program-have-its-own-account-configuration-ui-why-no-kcm-for-that/6803

Bug: https://bugs.gentoo.org/920914
Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

kde-plasma/plasma-welcome/plasma-welcome-5.27.10.ebuild

@@ -12,7 +12,7 @@ DESCRIPTION="A friendly onboarding wizard for Plasma"
 LICENSE="GPL-2+"
 SLOT="5"
 KEYWORDS="amd64 ~arm arm64 ~loong ~ppc64 ~riscv x86"
-IUSE="discover +kaccounts telemetry"
+IUSE="discover kaccounts telemetry"
 
 DEPEND="
 	>=dev-qt/qtdeclarative-${QTMIN}:5[widgets]