conformtest: clean up POSIX expectations for termios.h, time.h.

Continuing the series of patches to clean up conformtest expectations
for "POSIX" (1995/6) based on review of the expectations against the
standard, this patch cleans up expectations for termios.h and time.h.
Tested x86_64; no new XFAILs needed.

	* conform/data/termios.h-data [POSIX] (IUCLC): Do not expect
	constant.
	[POSIX] (IXANY): Likewise.
	[POSIX] (OLCUC): Likewise.
	[POSIX || POSIX2008] (CBAUD): Do not allow.
	[POSIX || POSIX2008] (DEFECHO): Likewise.
	[POSIX || POSIX2008] (ECHOCTL): Likewise.
	[POSIX || POSIX2008] (ECHOKE): Likewise.
	[POSIX || POSIX2008] (ECHOPRT): Likewise.
	[POSIX || POSIX2008] (EXTA): Likewise.
	[POSIX || POSIX2008] (EXTB): Likewise.
	[POSIX || POSIX2008] (FLUSHO): Likewise.
	[POSIX || POSIX2008] (LOBLK): Likewise.
	[POSIX || POSIX2008] (PENDIN): Likewise.
	[POSIX || POSIX2008] (SWTCH): Likewise.
	[POSIX || POSIX2008] (VDISCARD): Likewise.
	[POSIX || POSIX2008] (VDSUSP): Likewise.
	[POSIX || POSIX2008] (VLNEXT): Likewise.
	[POSIX || POSIX2008] (VREPRINT): Likewise.
	[POSIX || POSIX2008] (VSTATUS): Likewise.
	[POSIX || POSIX2008] (VWERASE): Likewise.
	(B*): Change to B[0123456789]*.
	* conform/data/time.h-data [POSIX || UNIX98]
	(CLOCK_PROCESS_CPUTIME_ID): Do not expect constant.
	[POSIX || UNIX98] (CLOCK_THREAD_CPUTIME_ID): Likewise.
	[POSIX || UNIX98] (CLOCK_MONOTONIC): Likewise.
	[POSIX] (tm_*): Do not allow.