Update icu library to version 54.1

Change-Id: I967500b339b2f1923c2b7f4f24882a18ba0011fe
diff --git a/icu4c-4_4_2-src.tgz b/icu4c-4_4_2-src.tgz
deleted file mode 100644
index fe21c77..0000000
--- a/icu4c-4_4_2-src.tgz
+++ /dev/null
Binary files differ
diff --git a/icu4c-54_1-src.tgz b/icu4c-54_1-src.tgz
new file mode 100644
index 0000000..d0f79be
--- /dev/null
+++ b/icu4c-54_1-src.tgz
Binary files differ