Merge "RpcServer: Remove unused using." am: fee3b898c8 am: 16de1e4642 am: 458e9c6136

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1687406

Change-Id: I1ea85a53577b94e1e8f3d1c01a7d0288f88ecf22
diff --git a/libs/binder/RpcServer.cpp b/libs/binder/RpcServer.cpp
index 6dc4f95..9a0be92 100644
--- a/libs/binder/RpcServer.cpp
+++ b/libs/binder/RpcServer.cpp
@@ -30,8 +30,6 @@
 
 namespace android {
 
-using base::unique_fd;
-
 RpcServer::RpcServer() {}
 RpcServer::~RpcServer() {}