Delete method kept for layoutlib

Typeface.buildSystemFallback was kept only because it was used in
layoutlib. Change I33f27f62 (commit a65f963) removed that last use case,
so this now deletes the unused method.

Bug: 112196940
Test: atest FrameworksCoreTests:TypefaceTest
Change-Id: I19b793d34c1ce16d5dc7430c08746261cd52b4b2
diff --git a/graphics/java/android/graphics/Typeface.java b/graphics/java/android/graphics/Typeface.java
index 492c236..e6ac060 100644
--- a/graphics/java/android/graphics/Typeface.java
+++ b/graphics/java/android/graphics/Typeface.java
@@ -34,7 +34,6 @@
 import android.provider.FontRequest;
 import android.provider.FontsContract;
 import android.text.FontConfig;
-import android.util.ArrayMap;
 import android.util.Base64;
 import android.util.LongSparseArray;
 import android.util.LruCache;
@@ -1112,13 +1111,6 @@
         }
     }
 
-    // Following methods are left for layoutlib
-    // TODO: Remove once layoutlib stop calling buildSystemFallback
-    /** @hide */
-    public static void buildSystemFallback(String xmlPath, String fontDir,
-            ArrayMap<String, Typeface> fontMap, ArrayMap<String, FontFamily[]> fallbackMap) {
-    }
-
     static {
         final HashMap<String, Typeface> systemFontMap = new HashMap<>();
         initSystemDefaultTypefaces(systemFontMap, SystemFonts.getRawSystemFallbackMap(),