libiconv-full: drop patch-libtool

libiconv 1.17 fails to compile with GCC15 when doing the host build,
luckily version 1.18 already contains the fixes required so update to it.

Signed-off-by: Robert Marko <robimarko@gmail.com>

Author: robimarko

package/libs/libiconv-full/Makefile

@@ -8,20 +8,19 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libiconv-full
-PKG_VERSION:=1.17
+PKG_VERSION:=1.18
 PKG_RELEASE:=1
 
 PKG_SOURCE:=libiconv-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@GNU/libiconv
-PKG_HASH:=8f74213b56238c85a50a5329f77e06198771e70dd9a739779f4c02f65d971313
+PKG_HASH:=3b08f5f4f9b4eb82f151a7040bfd6fe6c6fb922efe4b1659c66ea933276965e8
 PKG_BUILD_DIR:=$(BUILD_DIR)/libiconv-$(PKG_VERSION)
 HOST_BUILD_DIR:=$(BUILD_DIR_HOST)/libiconv-$(PKG_VERSION)
 
 PKG_MAINTAINER:=Jo-Philipp Wich <jo@mein.io>
 PKG_LICENSE:=LGPL-2.1-or-later
 PKG_LICENSE_FILES:=COPYING.LIB
 
-PKG_FIXUP:=patch-libtool
 PKG_INSTALL:=1
 PKG_BUILD_PARALLEL:=1