Revert "Add <uses-library> information."

This reverts commit 51f5329d69b43366dd5a64ac094f579a9545b4dd.

Reason for revert: no longer needed (and breaks the build) with 
   aosp/1798212.

Bug: 196377222
Change-Id: I7db8d963ac1fbd8072ea140d31d2e1e79a0aef38
Test: treehugger
diff --git a/testapps/TestRcsApp/TestApp/Android.bp b/testapps/TestRcsApp/TestApp/Android.bp
index f6ea54a..cda7d17 100644
--- a/testapps/TestRcsApp/TestApp/Android.bp
+++ b/testapps/TestRcsApp/TestApp/Android.bp
@@ -22,7 +22,6 @@
     ],
 
     libs: ["org.apache.http.legacy"],
-    uses_libs: ["org.apache.http.legacy"],
 
     certificate: "platform",
     privileged: true,