[fusl] Remove code for unsupported architectures

fusl/arch/powerpc/bits/alltypes.h.in

-#define _Addr int
-#define _Int64 long long
-#define _Reg int
-
-TYPEDEF __builtin_va_list va_list;
-TYPEDEF __builtin_va_list __isoc_va_list;
-
-#ifndef __cplusplus
-TYPEDEF long wchar_t;
-#endif
-
-TYPEDEF float float_t;
-TYPEDEF double double_t;
-
-TYPEDEF struct { long long __ll; long double __ld; } max_align_t;
-
-TYPEDEF long time_t;
-TYPEDEF long suseconds_t;
-
-TYPEDEF struct { union { int __i[9]; volatile int __vi[9]; unsigned __s[9]; } __u; } pthread_attr_t;
-TYPEDEF struct { union { int __i[6]; volatile int __vi[6]; volatile void *volatile __p[6]; } __u; } pthread_mutex_t;
-TYPEDEF struct { union { int __i[6]; volatile int __vi[6]; volatile void *volatile __p[6]; } __u; } mtx_t;
-TYPEDEF struct { union { int __i[12]; volatile int __vi[12]; void *__p[12]; } __u; } pthread_cond_t;
-TYPEDEF struct { union { int __i[12]; volatile int __vi[12]; void *__p[12]; } __u; } cnd_t;
-TYPEDEF struct { union { int __i[8]; volatile int __vi[8]; void *__p[8]; } __u; } pthread_rwlock_t;
-TYPEDEF struct { union { int __i[5]; volatile int __vi[5]; void *__p[5]; } __u; } pthread_barrier_t;