Remove legacy font configuration files.

They were no longer in use by frameworks. They were never part of a
public API and were kept in the system just in case a legacy app read
them. They had also been deprecated for three releases, which should
have given everybody enough time to switch.

Bug: 21785593
Change-Id: Ib80bcea92e45b608388455ef576bbfde647f77db
diff --git a/data/fonts/fonts.xml b/data/fonts/fonts.xml
index dbe81fa..1b97b65 100644
--- a/data/fonts/fonts.xml
+++ b/data/fonts/fonts.xml
@@ -1,11 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
-    NOTE: this is the newer (L) version of the system font configuration,
-    supporting richer weight selection. Some apps will expect the older
-    version, so please keep system_fonts.xml and fallback_fonts.xml in sync
-    with any changes, even though framework will only read this file.
-
-    All fonts withohut names are added to the default list. Fonts are chosen
+    All fonts without names are added to the default list. Fonts are chosen
     based on a match: full BCP-47 language tag including script, then just
     language, and finally order (the first font containing the glyph).