[PR115394] Remove streamer_debugging and it's uses.

[PR115394] Remove streamer_debugging and it's uses.

gcc/ChangeLog:
	PR lto/115394
	* lto-streamer.h: Remove streamer_debugging definition.
	* lto-streamer-out.cc (stream_write_tree_ref): Remove use of streamer_debugging.
	(lto_output_tree): Likewise.
	* tree-streamer-in.cc (streamer_read_tree_bitfields): Likewise.
	(streamer_get_pickled_tree): Likewise.
	* tree-streamer-out.cc (pack_ts_base_value_fields): Likewise.

Signed-off-by: Prathamesh Kulkarni <prathameshk@nvidia.com>