exec/cpu-all: Remove unused tswapls() definitions

Last use of tswapls() was removed 2 years ago in commit
aee14c77f4 ("linux-user: Rewrite do_getdents, do_getdents64").

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20231212123401.37493-15-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

include/exec/cpu-all.h

@@ -38,11 +38,9 @@
 
 #if TARGET_LONG_SIZE == 4
 #define tswapl(s) tswap32(s)
-#define tswapls(s) tswap32s((uint32_t *)(s))
 #define bswaptls(s) bswap32s(s)
 #else
 #define tswapl(s) tswap64(s)
-#define tswapls(s) tswap64s((uint64_t *)(s))
 #define bswaptls(s) bswap64s(s)
 #endif