Come up with ggc_delete.

2019-11-04  Martin Liska  <mliska@suse.cz>

	* ggc.h (ggc_delete): New function.
	* ipa-fnsummary.c (ipa_free_fn_summary): Use it.
	* ipa-prop.c (ipa_free_all_edge_args): Likewise.
	(ipa_free_all_node_params): Likewise.
	* ipa-sra.c (ipa_sra_analysis): Likewise.

From-SVN: r277767