Remove NotoColorEmojiTtf module.

Bug: 191914223
Test: atest UpdatableSystemFontTest
Change-Id: If66358c34715fbb8200fc276ebd21de237d624c0
diff --git a/emoji-compat/Android.bp b/emoji-compat/Android.bp
index cf33d75..d43e880 100644
--- a/emoji-compat/Android.bp
+++ b/emoji-compat/Android.bp
@@ -60,8 +60,10 @@
 }
 
 // To use in other build rules.
+// Renamed instead of removed to avoid merge conflicts.
+// TODO: remove this.
 genrule {
-    name: "NotoColorEmojiTtf",
+    name: "Unused_NotoColorEmojiTtf",
     srcs: ["font/NotoColorEmojiCompat.ttf"],
     out: ["NotoColorEmoji.ttf"],
     cmd: "cp $(in) $(out)",