[fusl] Remove code for unsupported architectures

fusl/arch/powerpc/bits/signal.h

Index: fusl/arch/powerpc/bits/signal.h
diff --git a/fusl/arch/powerpc/bits/signal.h b/fusl/arch/powerpc/bits/signal.h
deleted file mode 100644
index 11a2e9b6fa4f1f1d9362378ef6eda24714b06c96..0000000000000000000000000000000000000000
--- a/fusl/arch/powerpc/bits/signal.h
+++ /dev/null
@@ -1,119 +0,0 @@
-#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) || \
-    defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
-
-#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
-#define MINSIGSTKSZ 4096
-#define SIGSTKSZ 10240
-#endif
-
-#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
-
-typedef unsigned long greg_t, gregset_t[48];
-
-typedef struct {
-  double fpregs[32];
-  double fpscr;
-  unsigned _pad[2];
-} fpregset_t;
-
-typedef struct {
-  unsigned vrregs[32][4];
-  unsigned vrsave;
-  unsigned _pad[2];
-  unsigned vscr;
-} vrregset_t;
-
-struct sigcontext {
-  unsigned long _unused[4];
-  int signal;
-  unsigned long handler;
-  unsigned long oldmask;
-  void* regs;
-};
-
-typedef struct {
-  gregset_t gregs;
-  fpregset_t fpregs;
-  vrregset_t vrregs
-#ifdef __GNUC__
-      __attribute__((__aligned__(16)))
-#endif
-      ;
-} mcontext_t;
-
-#else
-
-typedef struct {
-  long __regs[48 + 68 + 4 * 32 + 4]
-#ifdef __GNUC__
-      __attribute__((__aligned__(16)))
-#endif
-      ;
-} mcontext_t;
-
-#endif
-
-struct sigaltstack {
-  void* ss_sp;
-  int ss_flags;
-  size_t ss_size;
-};
-
-typedef struct __ucontext {
-  unsigned long uc_flags;
-  struct __ucontext* uc_link;
-  stack_t uc_stack;
-  int uc_pad[7];
-  mcontext_t* uc_regs;
-  sigset_t uc_sigmask;
-  int uc_pad2[3];
-  mcontext_t uc_mcontext;
-} ucontext_t;
-
-#define SA_NOCLDSTOP 1U
-#define SA_NOCLDWAIT 2U
-#define SA_SIGINFO 4U
-#define SA_ONSTACK 0x08000000U
-#define SA_RESTART 0x10000000U
-#define SA_NODEFER 0x40000000U
-#define SA_RESETHAND 0x80000000U
-#define SA_RESTORER 0x04000000U
-
-#endif
-
-#define SIGHUP 1
-#define SIGINT 2
-#define SIGQUIT 3
-#define SIGILL 4
-#define SIGTRAP 5
-#define SIGABRT 6
-#define SIGIOT SIGABRT
-#define SIGBUS 7
-#define SIGFPE 8
-#define SIGKILL 9
-#define SIGUSR1 10
-#define SIGSEGV 11
-#define SIGUSR2 12
-#define SIGPIPE 13
-#define SIGALRM 14
-#define SIGTERM 15
-#define SIGSTKFLT 16
-#define SIGCHLD 17
-#define SIGCONT 18
-#define SIGSTOP 19
-#define SIGTSTP 20
-#define SIGTTIN 21
-#define SIGTTOU 22
-#define SIGURG 23
-#define SIGXCPU 24
-#define SIGXFSZ 25
-#define SIGVTALRM 26
-#define SIGPROF 27
-#define SIGWINCH 28
-#define SIGIO 29
-#define SIGPOLL 29
-#define SIGPWR 30
-#define SIGSYS 31
-#define SIGUNUSED SIGSYS
-
-#define _NSIG 65