Remove unused LOCAL_LDLIBS.

Change-Id: I0a648d3aab329edbbd8c4417fc053f024081933d
diff --git a/arm-wt-22k/Android.mk b/arm-wt-22k/Android.mk
index 8a854f7..8627e9a 100644
--- a/arm-wt-22k/Android.mk
+++ b/arm-wt-22k/Android.mk
@@ -102,6 +102,4 @@
 LOCAL_SHARED_LIBRARIES := \
 	libutils libcutils
 
-LOCAL_LDLIBS := -lpthread
-
 include $(BUILD_SHARED_LIBRARY)