libyang CHANGE review header includes

The plugins_types.h was supposed only for implementing data type plugins
code, so I've removed it from libyang.h (now it is supposed to be
included explicitly).
diff --git a/src/parser_stmt.c b/src/parser_stmt.c
index b4e6045..f2fe35f 100644
--- a/src/parser_stmt.c
+++ b/src/parser_stmt.c
@@ -21,8 +21,8 @@
 
 #include "common.h"
 #include "dict.h"
-#include "log.h"
 #include "in.h"
+#include "log.h"
 #include "parser_schema.h"
 #include "path.h"
 #include "schema_compile.h"