Set emoji search invisible for now

app/src/main/res/layout/emoji_popup_layout.xml

@@ -60,6 +60,7 @@
             android:clickable="true"
             android:focusable="true"
             android:padding="8dp"
+            android:visibility="invisible"
             android:src="@drawable/ic_search_gray_24px" />
 
         <ImageView
@@ -75,5 +76,4 @@
             android:src="@drawable/ic_backspace_gray_24dp" />
     </RelativeLayout>
 
-
 </android.support.constraint.ConstraintLayout>
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