Update the script to generate icu4c/source/data/misc/langInfo.txt

The file came from upstream previously, but now can be generated in
AOSP.

Test: rm icu4c/source/data/misc/langInfo.txt && ./tools/updatecldrdata.py
Change-Id: I91bbe4bfac91116cdc5f21496bee33b1ab8022b5
1 file changed