iw: simplify static linking handling

Now that libnl pkg-config file is correct, there is no need to have
special handling for static linking in the iw package: it already uses
pkg-config to get the necessary flags to link with libnl.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/iw/iw.mk

@@ -14,12 +14,6 @@ IW_MAKE_OPTS = CC="$(TARGET_CC)" LD="$(TARGET_LD)" LDFLAGS="$(TARGET_LDFLAGS)"
 IW_MAKE_ENV = PKG_CONFIG="$(HOST_DIR)/usr/bin/pkg-config" \
 	GIT_DIR=$(IW_DIR)
 
-ifeq ($(BR2_STATIC_LIBS),y)
-# libnl needs pthread/m, so we need to explicitly with them when static
-# these need to added AFTER libnl, so we have to override LIBS completely
-IW_MAKE_OPTS += LIBS='-lnl-genl-3 -lnl-3 -lpthread -lm'
-endif
-
 define IW_BUILD_CMDS
 	$(IW_MAKE_ENV) $(MAKE) $(IW_MAKE_OPTS) -C $(@D)
 endef