Remove per-language config files #11

Job	Run time
metadata	9s
submodule (brand) / download	13s
submodule (i18n) / download	11s
submodule (brand) / download_unprivileged	0s
submodule (i18n) / download_unprivileged	0s
submodule (mkdocs-material-insiders) / download	19s
submodule (mkdocs-material-insiders) / download_unprivileged	0s
build (es, true) / build	1m 3s
build (en, false) / build	59s
build (he, true) / build	1m 18s
build (fr, true) / build	1m 15s
build (it, true) / build	1m 2s
build (nl, true) / build	57s
build (ru, true) / build	1m 2s
build (zh-Hant, true) / build	1m 10s
build (nl, true) / offline_package	0s
build (en, false) / offline_package	0s
build (ru, true) / offline_package	0s
build (es, true) / offline_package	0s
build (it, true) / offline_package	0s
build (zh-Hant, true) / offline_package	0s
build (fr, true) / offline_package	0s
build (he, true) / offline_package	0s
combine_build	1m 1s
cleanup / cleanup	4s
	10m 43s

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