Update ICU to 54.1 step 1

source/tools/tzcode/tz.alias

Index: source/tools/tzcode/tz.alias
diff --git a/source/tools/tzcode/tz.alias b/source/tools/tzcode/tz.alias
deleted file mode 100644
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-#
-# !!!! WARNING !!!!!
-#
-# This file is OBSOLLETE and no longer used by ICU tzdata build tool.
-# Use the file 'icuzones' to specify backward compatibility aliases.
-#
-# 2007-04-03 Yoshito Umaoka
-#
-
-######################################################################
-# Copyright (C) 1999-2007, International Business Machines
-# Corporation and others.  All Rights Reserved.
-######################################################################
-# A simple alias list. We use this to retain backward compatibility.
-# For example, ICU has always defined the zone name "PST" to indicate
-# the zone America/Los_Angeles. Unless we continue to have a zone with
-# this ID, legacy code may break.
-# 
-# This list is read by tz2icu to incorporate legacy ICU zone aliases
-# into the ICU system zone data.
-#
-# Format: alias_name unix_name # optional comment
-
-#### Aliases that conflict with Olson compatibility Zone definition
-
-ACT Australia/Darwin
-AET Australia/Sydney
-AGT America/Buenos_Aires
-ART Africa/Cairo
-AST America/Anchorage
-BET America/Sao_Paulo
-BST Asia/Dhaka # spelling changed in 2000h; was Asia/Dacca
-CAT Africa/Harare
-CNT America/St_Johns
-CST America/Chicago
-CTT Asia/Shanghai
-EAT Africa/Addis_Ababa
-ECT Europe/Paris
-# EET Europe/Istanbul # EET is a standard UNIX zone
-#### EST America/New_York # Defined as -05:00
-#### HST Pacific/Honolulu # Defined as -10:00
-IET America/Indianapolis
-IST Asia/Calcutta
-JST Asia/Tokyo
-# MET Asia/Tehran # MET is a standard UNIX zone
-MIT Pacific/Apia
-#### MST America/Denver # Defined as -07:00
-NET Asia/Yerevan
-NST Pacific/Auckland
-PLT Asia/Karachi
-PNT America/Phoenix
-PRT America/Puerto_Rico
-PST America/Los_Angeles
-SST Pacific/Guadalcanal
-# UTC Etc/UTC # Olson LINK
-VST Asia/Saigon