Remove redefinition of macros

Some macros were redefined in ssl3_cbc.c. We remove the redefinitions

Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from #18132)

ssl/record/methods/ssl3_cbc.c

@@ -34,27 +34,6 @@
 #endif
 #include <openssl/sha.h>
 
-# define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>16)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
-                         *((c)++)=(unsigned char)(((l)    )&0xff))
-
-# define l2n6(l,c)       (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>32)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>24)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>16)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
-                         *((c)++)=(unsigned char)(((l)    )&0xff))
-
-# define l2n8(l,c)       (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>48)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>40)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>32)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>24)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>>16)&0xff), \
-                         *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
-                         *((c)++)=(unsigned char)(((l)    )&0xff))
-
 /*
  * MAX_HASH_BIT_COUNT_BYTES is the maximum number of bytes in the hash's
  * length field. (SHA-384/512 have 128-bit length.)