Remove ununsed 'using namespace std'
This causes build error on clang-r522817 + new libc++:
In file included from hardware/ril/libril/RilSapSocket.cpp:20:
In file included from hardware/ril/libril/RilSapSocket.h:21:
In file included from hardware/ril/libril/RilSocket.h:20:
hardware/ril/libril/rilSocketQueue.h:22:17: error: using directive refers to implicitly-defined namespace 'std' [-Werror]
22 | using namespace std;
| ^
1 error generated.
Test: presubmit
Bug: 322868540
Change-Id: I14ab941c7d04947d5d8fe675d4451ee1f7fbc4ea
diff --git a/libril/rilSocketQueue.h b/libril/rilSocketQueue.h
index eaa5155..2f06bc6 100644
--- a/libril/rilSocketQueue.h
+++ b/libril/rilSocketQueue.h
@@ -19,8 +19,6 @@
#include <hardware/ril/librilutils/proto/sap-api.pb.h>
#include <utils/Log.h>
-using namespace std;
-
/**
* Template queue class to handling requests for a rild socket.
* <p>
