Changed Turkish translation for Cyprus, source only

This changes the translation from "Güney Kıbrıs Rum Kesimi" to "Kıbrıs"
It backports a change that happened between CLDR 28 and 29.

Bug: 31177615
Change-Id: I72397ec3ea60117bfd8687a6ec18aa67e036b992
diff --git a/icu4c/source/data/region/tr.txt b/icu4c/source/data/region/tr.txt
index 3081652..889c364 100644
--- a/icu4c/source/data/region/tr.txt
+++ b/icu4c/source/data/region/tr.txt
@@ -95,7 +95,7 @@
         CV{"Cape Verde"}
         CW{"Curaçao"}
         CX{"Christmas Adası"}
-        CY{"Güney Kıbrıs Rum Kesimi"}
+        CY{"Kıbrıs"}
         CZ{"Çek Cumhuriyeti"}
         DE{"Almanya"}
         DG{"Diego Garcia"}