[libxslt] Use config mode for package LibXml2

[Nick Wellnhofer <nwellnhof src gnome org>]

commit 95714adb015b479d1f01f4377ce113d0dfb5f644
Author: Markus Rickert <rickert fortiss org>
Date:   Thu Nov 19 19:42:50 2020 +0100

    Use config mode for package LibXml2

 CMakeLists.txt | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)
---
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 645abe9c..e68a84be 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,8 +28,7 @@ set(LIBXSLT_VERSION_EXTRA "")
 set(VERSION ${LIBXSLT_DOTTED_VERSION})
 set(LIBEXSLT_VERSION ${LIBEXSLT_DOTTED_VERSION})
 
-find_package(Iconv)
-find_package(LibXml2 REQUIRED)
+find_package(LibXml2 CONFIG REQUIRED)
 find_package(Python2 COMPONENTS Interpreter Development)
 find_package(Threads)
 
@@ -216,10 +215,6 @@ if(LIBXSLT_WITH_CRYPTO)
        target_link_libraries(LibXslt PRIVATE gcrypt)
 endif()
 
-if(Iconv_FOUND)
-       target_link_libraries(LibXslt PUBLIC Iconv::Iconv)
-endif()
-
 target_link_libraries(LibXslt PUBLIC LibXml2::LibXml2)
 
 if(UNIX)