Useless use of USE_LDCONfIG

From: Baptiste Daroussin <bapt_at_freebsd.org>
Date: Mon, 26 Feb 2024 13:52:29 UTC
Hello,

I might have been missing the obvious, but for me it seems all the chromium
related ports are wearing a useless USE_LDCONFIG, I can't find a reason why
it would be useful, I removed it from my system and everything seems to work
as expected.

I think it would be safe if you remove it from all of the chromium related
ports.

Best regards,
Bapt