Remove NanumGothic and DroidSansFallback from fonts.xml.

These two fonts are no longer installed on a device.
This leaves the fonts themselves in place for the sdk build.

Change-Id: Ib69e73a6682d7eedd7b824f1dadc79cbccf07605
diff --git a/data/fonts/fonts.xml b/data/fonts/fonts.xml
index 731bf42..961d0eb 100644
--- a/data/fonts/fonts.xml
+++ b/data/fonts/fonts.xml
@@ -341,15 +341,9 @@
     <family lang="ko">
         <font weight="400" style="normal" index="1">NotoSansCJK-Regular.ttc</font>
     </family>
-    <family>
-        <font weight="400" style="normal">NanumGothic.ttf</font>
-    </family>
     <family lang="und-Zsye">
         <font weight="400" style="normal">NotoColorEmoji.ttf</font>
     </family>
-    <family>
-        <font weight="400" style="normal">DroidSansFallback.ttf</font>
-    </family>
     <!--
         Tai Le and Mongolian are intentionally kept last, to make sure they don't override
         the East Asian punctuation for Chinese.