nanocoap_example: make example a host instead of router

examples/nanocoap_server/Makefile

@@ -7,11 +7,8 @@ BOARD ?= native
 # This has to be the absolute path to the RIOT base directory:
 RIOTBASE ?= $(CURDIR)/../..
 
-BOARD_INSUFFICIENT_MEMORY := airfy-beacon chronos msb-430 msb-430h nrf51dongle \
-                          nrf6310 pca10000 pca10005 spark-core \
-                          stm32f0discovery telosb weio wsn430-v1_3b wsn430-v1_4 \
-                          yunjia-nrf51822 z1 nucleo-f072 nucleo-f030 \
-                          nucleo-f042
+BOARD_INSUFFICIENT_MEMORY := chronos msb-430 msb-430h nucleo-f030 nucleo-f042 \
+                             stm32f0discovery telosb weio
 
 # blacklist this until #6022 is sorted out
 BOARD_BLACKLIST := nrf52dk
@@ -21,10 +18,7 @@ BOARD_BLACKLIST := nrf52dk
 USEMODULE += gnrc_netdev_default
 USEMODULE += auto_init_gnrc_netif
 # Specify the mandatory networking modules for IPv6 and UDP
-USEMODULE += gnrc_ipv6_router_default
 USEMODULE += gnrc_udp
-# Add a routing protocol
-USEMODULE += gnrc_rpl
 # Additional networking modules that can be dropped if not needed
 USEMODULE += gnrc_icmpv6_echo
 
@@ -52,8 +46,6 @@ $(info Using low-memory configuration for microcoap_server.)
 ## low-memory tuning values
 # lower pktbuf buffer size
 CFLAGS += -DGNRC_PKTBUF_SIZE=1000
-# disable fib, rpl
-DISABLE_MODULE += fib gnrc_rpl
 USEMODULE += prng_minstd
 endif