Remove unused code

* syscall.c (subcall_style, decode_subcall): Remove.
[SYS_socket_subcall] (decode_socket_subcall): New function, based on
decode_subcall in deref_style.
[SYS_ipc_subcall] (decode_ipc_subcall): New function, based on
decode_subcall in shift_style.
(trace_syscall_entering): Use decode_socket_subcall and
decode_ipc_subcall instead of decode_subcall.
1 file changed