quasselc: remove pointless iconv ldflag

-liconv is included with the glib2 pkgconfig flags.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

libs/quasselc/Makefile

@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 PKG_NAME:=quasselc
 PKG_SOURCE_DATE:=2017-01-11
 PKG_SOURCE_VERSION:=a0a1e6bd87d3eac68b5369972d1c2035cfe47e94
-PKG_RELEASE:=3
+PKG_RELEASE:=4
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_SOURCE_DATE).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/phhusson/QuasselC/tar.gz/$(PKG_SOURCE_VERSION)?
@@ -43,8 +43,6 @@ define Package/quasselc/description
   An implementation of the Quassel protocol in pure C.
 endef
 
-TARGET_LDFLAGS += -liconv
-
 define Build/InstallDev
 	$(INSTALL_DIR) $(1)/usr/include/quasselc
 	$(CP) $(PKG_INSTALL_DIR)/usr/include/quasselc/* $(1)/usr/include/quasselc/