Remove unused #includes.

I'm working to remove the header in question.

Test: treehugger
Change-Id: I21805a4a17c0290325098390f7484d56d55d7fbe
diff --git a/guest/hals/ril/libril/ril.cpp b/guest/hals/ril/libril/ril.cpp
index d440232..fc20976 100644
--- a/guest/hals/ril/libril/ril.cpp
+++ b/guest/hals/ril/libril/ril.cpp
@@ -21,12 +21,10 @@
 #include <guest/hals/ril/libril/ril.h>
 #include <telephony/ril_cdma_sms.h>
 #include <cutils/sockets.h>
-#include <cutils/jstring.h>
 #include <telephony/record_stream.h>
 #include <utils/Log.h>
 #include <utils/SystemClock.h>
 #include <pthread.h>
-#include <cutils/jstring.h>
 #include <sys/types.h>
 #include <sys/limits.h>
 #include <sys/system_properties.h>