Update the script to generate icu4c/source/test/testdata/out

It was generated manually, e.g. in https://r.android.com/1547601,
but now generated by updateicudata.py.

Test: rm -r icu4c/source/test/testdata/out && ./tools/updateicudata.py
Change-Id: I0e9cec7cf4f6b01b2ef22d04b712f9c98eb6bea4
1 file changed