[Headers][X86] Remove more duplicated typedefs (#153820)

They are defined in mmintrin.h

Author: phoebewang

clang/lib/Headers/emmintrin.h

@@ -17,17 +17,13 @@
 #include <xmmintrin.h>
 
 typedef double __m128d __attribute__((__vector_size__(16), __aligned__(16)));
-typedef long long __m128i __attribute__((__vector_size__(16), __aligned__(16)));
 
 typedef double __m128d_u __attribute__((__vector_size__(16), __aligned__(1)));
 typedef long long __m128i_u
     __attribute__((__vector_size__(16), __aligned__(1)));
 
 /* Type defines.  */
 typedef double __v2df __attribute__((__vector_size__(16)));
-typedef long long __v2di __attribute__((__vector_size__(16)));
-typedef short __v8hi __attribute__((__vector_size__(16)));
-typedef char __v16qi __attribute__((__vector_size__(16)));
 
 /* Unsigned types */
 typedef unsigned long long __v2du __attribute__((__vector_size__(16)));

clang/lib/Headers/xmmintrin.h

@@ -16,7 +16,6 @@
 
 #include <mmintrin.h>
 
-typedef int __v4si __attribute__((__vector_size__(16)));
 typedef float __v4sf __attribute__((__vector_size__(16)));
 typedef float __m128 __attribute__((__vector_size__(16), __aligned__(16)));