apps: mosquitto_ctrl: don't hard set paths

In a cross compile environment, these paths will be added elsewhere, and
in a local environment, they should already be covered by the system
compiler.  Simply drop them.

Signed-off-by: Karl Palsson <karlp@etactica.com>

apps/mosquitto_ctrl/Makefile

@@ -8,8 +8,7 @@ else
 LIBMOSQ:=../../lib/libmosquitto.a
 endif
 
-LOCAL_CPPFLAGS:=-I/usr/include/cjson -I/usr/local/include/cjson -I../mosquitto_passwd
+LOCAL_CPPFLAGS:=-I../mosquitto_passwd
-LOCAL_LDFLAGS:=-L/usr/local/lib
 
 OBJS=	mosquitto_ctrl.o \
 		client.o \