ltp: Remove -mfpmath=sse on x86-64 too

Fixes build errors seen with clang/musl like on x86
error: the 'sse' unit is not supported with this instruction set

(From OE-Core rev: f99bc43c4564b8a7b2047c5c1009a6eb74b393ea)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-extended/ltp/ltp_20220527.bb

@@ -20,6 +20,7 @@ EXTRA_OECONF:append:libc-musl = " LIBS=-lfts "
 # earlier in CFLAGS, etc.
 CFLAGS:append:x86-64 = " -fomit-frame-pointer"
 TUNE_CCARGS:remove:x86 = "-mfpmath=sse"
+TUNE_CCARGS:remove:x86-64 = "-mfpmath=sse"
 
 CFLAGS:append:powerpc64 = " -D__SANE_USERSPACE_TYPES__"
 CFLAGS:append:mipsarchn64 = " -D__SANE_USERSPACE_TYPES__"