hooks.c (hook_void_tree_int): Remove.

	* hooks.c (hook_void_tree_int): Remove.
	(hook_void_constcharptr): Likewise.
	(hook_int_void_0): Likewise.
	* hooks.h: Remove the prototypes for the above three
	functions.
	* targhooks.c (hook_bool_machine_mode_true): Remove.
	* targhooks.h: Remove the prototype for
	hook_bool_machine_mode_true.

From-SVN: r78093