Drop template generation for updating .tx/config #616

Job	Run time
sync / sync	1m 8s
check / Lint translations	1m 11s
check / Build docs (latex)	6m 39s
check / Check for zero-width space characters	7s
check / Build docs (epub)	6m 59s
check / Build docs (html)	7m 3s
check / Build docs (pdf)	-1s
	23m 6s

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