libc: remove global libc_config()

Issue #3497

repos/libports/src/lib/libc/internal/legacy.h

@@ -43,11 +43,6 @@ namespace Libc {
 	 * XXX  this function is solely needed to support noux fork mechanism
 	 */
 	void schedule_suspend(void (*) ());
-
-	/**
-	 * Access libc configuration Xml_node.
-	 */
-	Xml_node libc_config();
 }
 
 #endif /* _LIBC__INTERNAL__LEGACY_H_ */

repos/libports/src/lib/libc/legacy.cc

@@ -35,9 +35,3 @@ void Libc::schedule_suspend(void (*suspended) ())
 {
 	Kernel::kernel().schedule_suspend(suspended);
 }
-
-
-Genode::Xml_node Libc::libc_config()
-{
-	return Kernel::kernel().libc_env().libc_config();
-}