Revert "Support Emoji keyboard"

This reverts commit d7791a93b0dee268a9e97f06fe5abcf6082e0ed1.

Change-Id: I5ca4c0227f97540e8a22b487b5056dfa3611082b
diff --git a/java/res/xml-sw600dp/key_f2.xml b/java/res/xml-sw600dp/key_f2.xml
index 56f233d..ca3b30b 100644
--- a/java/res/xml-sw600dp/key_f2.xml
+++ b/java/res/xml-sw600dp/key_f2.xml
@@ -39,7 +39,7 @@
         </case>
         <default>
             <Key
-                latin:keyStyle="emojiKeyStyle" />
+                latin:keyStyle="smileyKeyStyle" />
         </default>
     </switch>
 </merge>