gnucash-htdocs beta: Use php's builtin gettext.

[John Ralls]

Updated	 via  https://github.com/Gnucash/gnucash-htdocs/commit/50b1e864 (commit)
	from  https://github.com/Gnucash/gnucash-htdocs/commit/93dd807b (commit)



commit 50b1e864c1d2b2f5be3321055b0ae417067f4408
Author: John Ralls <jralls at ceridwen.us>
Date:   Wed Aug 11 15:12:08 2021 -0700

    Use php's builtin gettext.



Summary of changes:
 accept-to-gettext.inc | 184 -----------------
 externals/gettext.inc | 534 --------------------------------------------------
 externals/gettext.php | 421 ---------------------------------------
 lang.php              |   3 -
 4 files changed, 1142 deletions(-)
 delete mode 100644 accept-to-gettext.inc
 delete mode 100644 externals/gettext.inc
 delete mode 100644 externals/gettext.php