language: remove manual hr -> sr mapping

was removed in CLDR for geo-political reasons

Change-Id: I318ae1fa55a7012342a0709a7f3114d6e39bae6e
Reviewed-on: https://go-review.googlesource.com/55331
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Nigel Tao <nigeltao@golang.org>
5 files changed