AOI: remove translations folder

po/wesnoth-aoi/FINDCFG

@@ -1,2 +0,0 @@
-find data/campaigns/An_Orcish_Incursion -name '*.cfg' -print
-find data/campaigns/An_Orcish_Incursion -name '*.lua' -print

po/wesnoth-aoi/LINGUAS

@@ -1 +0,0 @@
-af ang@latin ar bg ca ca_ES@valencia cs da de el en_GB en@shaw es eo et eu fi fr ga gd gl grc he hr hu id is it ja ko la lt lv mk mr nl nb_NO pl pt pt_BR racv ro ru sk sl sr sr@ijekavian sr@ijekavianlatin sr@latin sv tl tr uk vi zh_CN zh_TW

po/wesnoth-aoi/Makevars

@@ -1,41 +0,0 @@
-# Makefile variables for PO directory in any package using GNU gettext.
-
-# Usually the message domain is the same as the package name.
-DOMAIN = wesnoth-aoi
-
-# These two variables depend on the location of this directory.
-subdir = po/$(DOMAIN)
-top_builddir = ../..
-
-# These options get passed to xgettext.
-XGETTEXT_OPTIONS = --from-code=UTF-8 --sort-by-file --keyword=sgettext --keyword=vgettext --keyword=_n:1,2 --keyword=sngettext:1,2 --keyword=vngettext:1,2 --add-comments=TRANSLATORS:
-
-# This is the copyright holder that gets inserted into the header of the
-# $(DOMAIN).pot file.  Set this to the copyright holder of the surrounding
-# package.  (Note that the msgstr strings, extracted from the package's
-# sources, belong to the copyright holder of the package.)  Translators are
-# expected to transfer the copyright for their translations to this person
-# or entity, or to disclaim their copyright.  The empty string stands for
-# the public domain; in this case the translators are expected to disclaim
-# their copyright.
-COPYRIGHT_HOLDER = Wesnoth development team
-
-# This is the email address or URL to which the translators shall report
-# bugs in the untranslated strings:
-# - Strings which are not entire sentences, see the maintainer guidelines
-#   in the GNU gettext documentation, section 'Preparing Strings'.
-# - Strings which use unclear terms or require additional context to be
-#   understood.
-# - Strings which make invalid assumptions about notation of date, time or
-#   money.
-# - Pluralisation problems.
-# - Incorrect English spelling.
-# - Incorrect formatting.
-# It can be your email address, or a mailing list address where translators
-# can write to without being subscribed, or the URL of a web page through
-# which the translators can contact you.
-MSGID_BUGS_ADDRESS =https://bugs.wesnoth.org/
-
-# This is the list of locale categories, beyond LC_MESSAGES, for which the
-# message catalogs shall be used.  It is usually empty.
-EXTRA_LOCALE_CATEGORIES =