Do not include <linux/ptrace.h>

&lt;linux/ptrace.h&gt; conflicts with &lt;sys/ptrace.h&gt; on recent
toolchains and including the former is enough.

    In file included from Ptrace.hsc:10:0:
    /usr/include/linux/ptrace.h:58:8: error:
    redefinition of ‘struct ptrace_peeksiginfo_args’
     struct ptrace_peeksiginfo_args {
            ^
    In file included from Ptrace.hsc:9:0:
    /usr/include/sys/ptrace.h:191:8: note: originally defined here
     struct ptrace_peeksiginfo_args
            ^