lib: remove ulzma()

That function is no longer used. All users have been updated to
use the ulzman() function which specifies lengths for the input
and output buffers.

Change-Id: Ie630172be914a88ace010ec3ff4ff97da414cb5e
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15526
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/include/lib.h

@@ -21,7 +21,6 @@
 #include <types.h>
 
 /* Defined in src/lib/lzma.c. Returns decompressed size or 0 on error. */
-size_t ulzma(const void *src, void *dst);
 size_t ulzman(const void *src, size_t srcn, void *dst, size_t dstn);
 
 /* Defined in src/lib/ramtest.c */