Revert "package/tzdata: install a default localtime"

This reverts commit f96e4d7f.

As suggested by Thomas, we need to find a single solution that is
valid for both (e)glibc and uClibc.

There is work on-going by Alexandre, so just revert this for now.

Reported-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>