rs6000-cpus.def (-mvsx-scalar-float): Delete undocumented debugging options.

rs6000-cpus.def (-mvsx-scalar-float): Delete undocumented debugging options.

2017-08-21  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* config/rs6000/rs6000-cpus.def (-mvsx-scalar-float): Delete
	undocumented debugging options.
	(-mvsx-scalar-double): Likewise.
	(-mallow-df-permute): Likewise.
	(-mvectorize-builtins): Likewise.
	* config/rs6000/rs6000.c (rs6000_init_hard_regno_mode_ok):
	Likewise.
	(rs6000_builtin_vectorized_function): Likewise.
	(rs6000_builtin_md_vectorized_function): Likewise.
	(rs6000_opt_vars): Likewise.

From-SVN: r251248