display: Remove deprecated clang property

Change-Id: I189094739247e092f657769d751d7c142694f7d5
diff --git a/Android.bp b/Android.bp
index 5b2f3a9..31f53b1 100644
--- a/Android.bp
+++ b/Android.bp
@@ -13,7 +13,6 @@
         "libutils",
     ],
     header_libs: ["display_headers"],
-    clang: true,
 }
 
 cc_library_headers {