Lose nohup to toybox.

Change-Id: I2928534bc70c6c77cdc90b658029567f00e7f6ad

toolbox/Android.mk

@@ -142,7 +142,6 @@ OUR_TOOLS := \
     nandread \
     netstat \
     newfs_msdos \
-    nohup \
     notify \
     ps \
     readlink \

toolbox/nohup.c

@@ -1,26 +0,0 @@
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-int nohup_main(int argc, char *argv[])
-{
-    if (argc < 2) {
-        fprintf(stderr, "Usage: %s [-n] program args...\n", argv[0]);
-        return EXIT_FAILURE;
-    }
-    signal(SIGHUP, SIG_IGN);
-    argv++;
-    if (strcmp(argv[0], "-n") == 0) {
-        argv++;
-        signal(SIGINT, SIG_IGN);
-        signal(SIGSTOP, SIG_IGN);
-        signal(SIGTTIN, SIG_IGN);
-        signal(SIGTTOU, SIG_IGN);
-        signal(SIGQUIT, SIG_IGN);
-        signal(SIGTERM, SIG_IGN);
-    }
-    execvp(argv[0], argv);
-    perror(argv[0]);
-    return EXIT_FAILURE;
-}