Remove dead code

* defs.h (tv_tv): Remove.
* net.c (sys_xsetsockaddr): Remove commented out dead code.
* process.c (setarg, sys_execv, sys_execve, struct_user_offsets):
Likewise.
* signal.c (sys_sigsuspend): Likewise.
* strace.c (reaper, trace): Likewise.
* stream.c (internal_stream_ioctl): Likewise.
* syscall.c (trace_syscall): Likewise.
* term.c (term_ioctl): Likewise.
* util.c (tv_tv, umoven, uload, getpc, fixvfork, setbpt, clearbpt):
Likewise.
diff --git a/strace.c b/strace.c
index 23c3650..2fb75c9 100644
--- a/strace.c
+++ b/strace.c
@@ -1655,21 +1655,12 @@
 
 #ifdef USE_PROCFS
 
-static void
-reaper(sig)
-int sig;
+static void reaper(int sig)
 {
 	int pid;
 	int status;
 
 	while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
-#if 0
-		struct tcb *tcp;
-
-		tcp = pid2tcb(pid);
-		if (tcp)
-			droptcb(tcp);
-#endif
 	}
 }
 
@@ -2322,12 +2313,6 @@
 				 * version of SunOS sometimes reports
 				 * ECHILD before sending us SIGCHILD.
 				 */
-#if 0
-				if (nprocs == 0)
-					return 0;
-				fprintf(stderr, "strace: proc miscount\n");
-				exit(1);
-#endif
 				return 0;
 			default:
 				errno = wait_errno;