[fusl] Remove code for unsupported architectures

fusl/arch/arm/bits/signal.h

Index: fusl/arch/arm/bits/signal.h
diff --git a/fusl/arch/arm/bits/signal.h b/fusl/arch/arm/bits/signal.h
deleted file mode 100644
index 30db39765c9e7f1866706a45020db1482e2c807a..0000000000000000000000000000000000000000
--- a/fusl/arch/arm/bits/signal.h
+++ /dev/null
@@ -1,84 +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 2048
-#define SIGSTKSZ 8192
-#endif
-
-#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
-typedef int greg_t, gregset_t[18];
-typedef struct sigcontext {
-  unsigned long trap_no, error_code, oldmask;
-  unsigned long arm_r0, arm_r1, arm_r2, arm_r3;
-  unsigned long arm_r4, arm_r5, arm_r6, arm_r7;
-  unsigned long arm_r8, arm_r9, arm_r10, arm_fp;
-  unsigned long arm_ip, arm_sp, arm_lr, arm_pc;
-  unsigned long arm_cpsr, fault_address;
-} mcontext_t;
-#else
-typedef struct { unsigned long __regs[21]; } 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;
-  mcontext_t uc_mcontext;
-  sigset_t uc_sigmask;
-  unsigned long long uc_regspace[64];
-} ucontext_t;
-
-#define SA_NOCLDSTOP 1
-#define SA_NOCLDWAIT 2
-#define SA_SIGINFO 4
-#define SA_ONSTACK 0x08000000
-#define SA_RESTART 0x10000000
-#define SA_NODEFER 0x40000000
-#define SA_RESETHAND 0x80000000
-#define SA_RESTORER 0x04000000
-
-#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