schema internal MAINTENANCE removed new_mods set

... because it is not necessary to have it in the ::lys_parser_ctx.
And it is not used at all in the yang_parse_sub/module or
yin_parse_sub/module functions. In other functions
(lys_resolve_import_include, lys_parse_submodule,
lysp_load_submodules), new_mods is passed as a parameter.
diff --git a/src/parser_yin.c b/src/parser_yin.c
index c7a2307..ea056cb 100644
--- a/src/parser_yin.c
+++ b/src/parser_yin.c
@@ -3704,7 +3704,6 @@
     *yin_ctx = calloc(1, sizeof **yin_ctx);
     LY_CHECK_ERR_RET(!(*yin_ctx), LOGMEM(ctx), LY_EMEM);
     (*yin_ctx)->format = LYS_IN_YIN;
-    (*yin_ctx)->new_mods = main_ctx->new_mods;
     LY_CHECK_RET(lyxml_ctx_new(ctx, in, &(*yin_ctx)->xmlctx));
 
     mod_p = calloc(1, sizeof *mod_p);
@@ -3760,7 +3759,7 @@
 }
 
 LY_ERR
-yin_parse_module(struct lys_yin_parser_ctx **yin_ctx, struct ly_in *in, struct lys_module *mod, struct ly_set *new_mods)
+yin_parse_module(struct lys_yin_parser_ctx **yin_ctx, struct ly_in *in, struct lys_module *mod)
 {
     LY_ERR ret = LY_SUCCESS;
     enum ly_stmt kw = LY_STMT_NONE;
@@ -3770,7 +3769,6 @@
     *yin_ctx = calloc(1, sizeof **yin_ctx);
     LY_CHECK_ERR_RET(!(*yin_ctx), LOGMEM(mod->ctx), LY_EMEM);
     (*yin_ctx)->format = LYS_IN_YIN;
-    (*yin_ctx)->new_mods = new_mods;
     LY_CHECK_RET(lyxml_ctx_new(mod->ctx, in, &(*yin_ctx)->xmlctx));
 
     mod_p = calloc(1, sizeof *mod_p);