Revert "Add flag for compiling into shared libraries."

This reverts commit eb405d8a422eb77910a15715d17b60b7f10bbf8c.

Reason for revert: because we plan to compile icu into static library.

BUG=chromium:1020393

Change-Id: I49d3ff3d44217c3cea1bd9ce44e11db774395d44
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/deps/icu/+/2065689
Reviewed-by: Jungshik Shin <jshin@chromium.org>
2 files changed