cbfstool/lzma: Remove code which depends on commented out defines

These options seem to control the behavior of the encoder/decoder,
with comments citing a trade-off between memory usage and performance.
I removed these in a separate patch to make reverting in the future
easier, if we find these options are useful.

Change-Id: I24cb7101b89e60f4fb96777e3681c03d2a62e3d5
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5084
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

util/cbfstool/lzma/C/LzmaEnc.c

@@ -174,11 +174,8 @@ struct COptimal
 
 #define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
 
-#ifdef _LZMA_PROB32
-#define CLzmaProb uint32_t
-#else
-#define CLzmaProb uint16_t
-#endif
+typedef uint16_t CLzmaProb;
+
 
 #define LZMA_PB_MAX 4
 #define LZMA_LC_MAX 8