CMake build: remove dependency of ClangTools on libclang

Amends 9fc2fda07e

Change-Id: I0bec3d894eae0117a52e6363c1a92cca98cd05b2
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/clangtools/CMakeLists.txt

@@ -5,8 +5,8 @@ endif()
 find_package(yaml-cpp QUIET MODULE)
 
 add_qtc_plugin(ClangTools
-  CONDITION TARGET libclang AND TARGET yaml-cpp
-  DEPENDS ClangSupport libclang yaml-cpp
+  CONDITION TARGET yaml-cpp
+  DEPENDS ClangSupport yaml-cpp
   PLUGIN_DEPENDS Core Debugger CppTools ${TST_COMPONENT}
   PLUGIN_RECOMMENDS CppEditor
   INCLUDES ${CLANG_INCLUDE_DIRS}